Is300 misfire.
Is300 misfire When I drive the car regularly it drives just fine, but once I mash the throttle it starts backfiring and losing power. I have a 02 IS300 that has been giving me problems since I bought it. Nov 23, 2011 · Hi Guys, Sorry I have to post a Lexus problem in the Supra forum, because I cannot find a IS300 forum under Lexus. Members Online • bayareaboys2000. A few months back, I lost a coil pack (cyl 2). spark plugs, wires and coils are all fine, no vaccum leaks Aug 25, 2022 · Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. check if you have power going to the coil packs when the car is running. Treat P0302 with these codes like it has P0300. The last week a CEL with track off appears and the car dont run well. It's constant and entirely obvious. Oct 22, 2013 · I have a 2002 bone-stock IS300 with 114,00 miles and I suspect I have a bad injector in cylinder 5. 2001 Lexus IS300. 4 - misfire/cutout happens in any gear if I rev. I bought it with misfire codes that were P0300, P0301, P0303, P0304, and P0306. If the misfire did move cylinders, you can go ahead and replace the plug, plug wire, and coil pack. It of course goes away when I reset my ECU and then appears a few days, sometimes a week or two later. Apr 17, 2008 · 2002 Onyx Eshift Lexus IS300 2004 Black MT Nissan 350Z Past Mods- JoeZ intake, Toyomoto Headers, Toyomoto Race Pipe, Greddy Evo 2 Catback, Zex nitrous, NX nitrous, Greddy Emanage, clear front bumper lights, Autometer AF gauge, PLP front strut, PLP rear Strut, PLP trunk brace. So basically misfiring on all cylinders but 2 and 5. i get the codes p0300 p0301 p0302 i got a code for the ignition coil primary a which seemed to be malfunctioning but i replaced all 3 coil packs i dont know wat is going on. The car has this knocking sound when running, my ears are not that great, but it seems to me the sound comes Mar 2, 2009 · Greetings, 2 main questions: 1) A couple days ago the engine starting running a little rough. '02 Lexus IS300 MSM 5AT LSD - RIP '08 Chevy Silverado 4x4 LS2 Swap - SOLD '13 Subaru BRZ Limited 6 Spd - SOLD Oct 31, 2021 · Hello everyone! I have issues with my lexus is 200 (1999, 1G-FE), the engine vibrates under acceleration, has misfire in cylinders number 1,2,4 and feels like it's in LIMP mode . Primarily at idle, smooths out at rpm. I have an HP header, Y Pipe, o2 sensor installed, and SRT intake. 0L Cuts out, Misfire, MIL Lamp on Posted to Asian Driveability on 5/23/2013 5 Replies We did replace timing belt and after that it got misfire on cylinder #1 and #6. 1 second then is perfectly fine and won’t happen unless Jul 31, 2007 · i am glad to have found this. Jan 8, 2012 · P0301 Misfire Detected - Cyl. I swapped those, and still got the misfire in 2 and 5. Changed spark plugs. Car was diagnosed, cleared, and rediagnosed with P0303 cylinder 3 misfire several times. If they're loose, broken or wet, it'll misfire. Replaced a bunch of old vacuum lines during this process. If you have P0300 and a cylinder-specific May 14, 2020 · If the misfire jumps to the cylinder that you’ve just swapped your IS 300’s ignition components into, then you know that you are looking at is a coil, plug wire, or (most likely) coil pack failure. if it sparks, your good. Mar 17, 2019 · P0302 + Other Cylinder Misfire Codes. All went well until I realized my valve cover gaskets are leaking bad and each plug is soaked in oil, most likely the cause of the misfire. SOLD: '03 GGP Manual IS300 97K Miles - SRT HFI, B&M Shifter, Colgan Mask, Alpine F340 Amp, Infinity Kappa Speakers, 2-Din MP3 Player May 22, 2014 · Misfires are very common and associated with misfires but generally you would normally get DTC P1349 OCV/timing code. When you see your Lexus IS300 starts to show any of these signs, use a OBDII scan tool to retrieve your trouble code. is300 Apr 24, 2023 Sep 25, 2016 · Misfires on cylinder #6 is more likely due to vacuum caps/connections on the underside rear of the intake. Almost as if it were running low on gas. Mar 30, 2021 · Some 2015 - 2017 model year NX 200t, 2016 - 2017 model year GS 200t, IS 200t, and RC 200t, 2018 - 2019 model year GS 300, and 2018 - 2021 model year NX 300, and 2018 - 2024 model year IS 300 and RC 300 vehicles equipped with an 8AR-FTS engine may exhibit a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs For a background on the recent work I’ve done, I was originally diagnosing a misfire. i have a 04 lexus is300 i have random misfires and my car seems to shut off once in a while. It only happens when in low RPM, both ways of feathering the throttle or stepping on it hard from the way i A subreddit for first generation Lexus IS300 owners and enthusiasts. Runs beautifully for a couple thousand miles, until*So a couple days ago I get the same P0303 cylinder Nov 9, 2012 · Okay, well I recently purchased an is300, it's progressively angering me more and more. Jul 7, 2022 · P0305 Cylinder 5 misfire Jump to Latest 6. the day after the problem was reversed car fired up ran perfect until I just started my summer project of trying to revive my 2005 is300. This code indicates that your car's engine is misfiring and can be a drivability threat. my is300 again show misfire in p0303. One of the more common Lexus IS300 trouble codes include P0300. About a week after that started happening, the check engine light came on. Jul 15, 2022 · Hey guys, recently I did a timing job on my 03 IS300, after the timing job. 2018 - 2024 IS300, RC300 VDS(s): AA1D2, AA5BC, BA1D2, CA1D2, Cylinder Misfire DTCs and go to substep B for Air-Fuel Ratio Imbalance DTCs. Since I got it (about 400-500 miles after getting it) the CEL came on. Same problem. I was amazed I made it. Feb 26, 2013 · car started acting up a few days ago. Bad fuel injectors can cause misfires in your engine due to an incorrect air-fuel ratio. I haven't driven it since changing the timing belt, so the misfire occurs while idling. if your driving it seems to run fine other than a SLIGHT loss of power but hardly noticable but when idling it was VERY obvious there was a misfire ( sometimes it would even die while idling but always started right back up ) took Aug 25, 2022 · Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. 9, 14. New plugs, wires, coil boots, still misfires badly Tags misfire. 6K views 13 replies 3 participants last post by chuy409 Aug 7, 2021 Aug 29, 2023 · #help #misfire engine help help is300 sos Jump to Latest 687 views 2 replies 3 participants last post by chucky702 Sep 19, 2023 Aug 10, 2005 · Backfiring, surging, popping, sputtering and of course the CEL was flashing. 4 and 14. . Asked by K. When I rev the engine, it hesitates up until 2k rpm and then it drives Aug 25, 2022 · Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. Edit-probably coil A subreddit for first generation Lexus IS300 owners and enthusiasts. I am getting a cylinder 3 misfire stored AND pending code. Aug 25, 2011 · Ok heres the problem im having: I am supercharged but i dont have the charger in at this time, but im throwing a mutiple/random misfire code and one day it also threw a cylinder 3 misfire code. Jump to Latest 15K views 19 Dec 19, 2007 · Hi All,*A little background. Anyhow, I've had a P0161 code leading me to B2S2 o2 sensor for a long time, and since I pulled both set of plugs and both times bank 2 is dead rich. One of the most principal and many cause is that your Lexus IS300 gas cap is loose, damaged or missing. The mileage on my 2002 Lexus is approximately 160,000. Car runs fine and has power after reseting ECU for f Oct 26, 2019 · 3. Thats it. March 04, 2018 Mar 19, 2018 · Hey, guys. p0300 (random misfire) p0301 (cyl 1 misfire) p0303 Jul 29, 2021 · IS300 cylinder 3 misfire? Jump to Latest 4. P0303 will often be accompanied by codes P0301, P0302, P0304, P0305, etc… These codes indicate a misfire in cylinders one, three, four, and five, respectively. com Dec 25, 2015 · I have my 2002 IS300 5 speed car has been running great %100 stock recently It started misfiring real bad, Codes that have come up are as follows P0301 Cylinder #1 — Misfire Detected P0302 Cylinder #2 — Misfire Detected P0303 Cylinder #3 — Misfire Detected P0304 Cylinder #4 — Misfire Detected P0305 Cylinder #5 — Misfire Detected Check the connectors on the coils. 5-3k. P0304 will often be accompanied by codes P0301, P0302, P0303, P0305, etc… These codes indicate a misfire in cylinders one, three, four, and five, respectively. Its so bad that the check engine light starts to flash then stops flashing. Author: Misra,Prasun Sep 21, 2016 · my lexus rx 300 1999 has a problem code p 0171 an aftar that code appear on my obd go to 30-40 km and starts misfire on 1 and 3 cilynder. Dec 8, 2014 · P0300 - Multiple cylinder misfires; P030(1-8) - Misfire in cylinders (1 through 8) If there are only misfire codes stored in the vehicle's computer, the issue is probably related to something the computer doesn't have sensors to check. Check fuel pressure. 4K views 11 replies 3 participants last post by Blaze. Aug 10, 2009 · Hey everyone, I'm a new member to this forum but a Lexus owner for 2 years now IS300/03 5sp 120mil, I enjoy the ride and the power but now just lately i stumbled into a problem which my Mech and I can not figure out. I pulled a P0300 code (random misfires) Need help with is300 misfire and brakes. Did some searching and faulty injectors seemed common so tested the resistance of them and from 1-6 the values were 13. Misfire cyl 4, and it started to miss at a cruise. if it doesn't, well theres your problem. fml. One new thing I have learned is that the car only misfires in Apr 3, 2012 · My IS300 recently started sounding like a diesel truck at idle and its rough. Members Online 05 auto is300 that I bought for $5,450 USD. As soon as you hear the relay for the fans click over, the car starts misfiring, and Sep 3, 2018 · P0303 Cylinder 3 Misfire Detected P0302 Cylinder 2 Misfire Detected P0300 Random/Multiple Misfire Detected. Mar 10, 2019 · P0300 is a generic OBDII code that can occur with the Lexus IS 300. Show Less . No other codes. Stored DTCs- Lean mixture bank 1, misfires in multiple cylinders. P0300 Lexus Code - Random Cylinder Misfire Condition Dec 24, 2012 · 01 - 06 Lexus IS300 ; Random Misfire Random Misfire. Here is the the scenario, The Cel was on for the longest time, i got it check it Apr 19, 2014 · p0306 cyl 6 misfire p0301 cyl 1 misfire p0300 random misfire Quite the line up. I was on my way to work and had about another 10 miles to go. In my experience it's usually a coil or compression but can be plugs or wires if they are severly worn out. Aug 28, 2008 · 2003 Lexus IS300, (Yellow), JIC FLTA1 coilovers, 19 inch axis crux, dunlop rubber,Vis carbon fiber hood, srt intake, greedy exhaust, kenwood excelon touch screen navi, clear corners, tints, teck pro ground kit, and Stop-tech cross drilled/slotted rotors with axis pads. what you listed for p0302 could be reasons for the misfire. 3. But mentioning the coil packs. 7K views 2 replies 3 participants last post by TobiasSing Oct 17, 2020. '02 IS300 MSM LSD Save Share Jan 8, 2020 · 01 is300 misfires on 1, 3, and 5. ) 3 - it feels like the typical rev limiter/cut out, or like Ignition is misfiring badly pretty much like i lost a Cyl. Misfires and Loss of Power. Jan 17, 2020 · p0301 means misfire detected in cylinder 1 same with p0302 and p0306 it means a misfire has been detected in cylinder 2 and 6. 120k miles, bone stock, single old man owner w/ full service history. I pulled the codes and got all 6 cylinders misfiring and random misfire code of course. It's common for oil to get in there because the filler neck is right there. Elke keer als ik het voertuig start, lijkt het alsof hij af wil slaan als hij stationair draait. Ik heb gezien dat de mijne de misfire-code geeft als dat gebeurt. It hasn't thrown a single code so it makes it all the more mysterious and difficult to diagnose! Dec 9, 2013 · 02 is300 misfire on 1 & 6. i opened up the ECU and try to find any burn, brown, flaky, and anything that looks dysfunctional to the ecu and Can you describe any specific conditions under which the engine misfire or hesitation occurs, such as during acceleration or at idle? Customer: My obd2 is giving me cylinder 4 misfire Mechanic's Assistant: OK. P0303 Lexus Code - Cylinder 3 Misfire Detected Mar 28, 2022 · I've searched the forum and still can't find why my car is having random/multiple misfiring, the only code I'm getting is p0300 and p0171 which I figure is just because I'm running an aftermarket header, but p0171 was just recent. 3840 Views 14 Replies 9 Participants Last post by BlackSportD, Sep 22, 2010 Jump to Latest T. New spark plugs, new spark wires, new VVTi Solenoid, replaces some vacuum lines, and cleaned MAF. 4. Aug 25, 2022 · Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. I have an 01 is300 and it started misfiring today. So rand om misfire in all cylinders. The Mechanic can help with your Lexus IS300's cylinder 4 misfire issue. While at a stop, idling, I feel the engine kinda stutter. The check engine light is flashing and it is running very rough, Ive stopped driving it. After around 350 miles of driving the CEL came on with a Traction light flashing. jamesstew in Elk Grove, CA on . that would not set rich codes for both banks. Ran fine for a while, but then started misfiring again. Sep 26, 2015 · I have a 2002 Lexus is300 2jz Stock Engine with a check engine light on and a "trac off" light blinking . Sounds like you need to clean the throttle body. I checked the timing, it was on point. Had one of the technicians at work (I work for Toyota) pull the codes and I got P0300-P0306. I would check the condition of the plugs and make sure there's no oil pooled up in that area. im new to the mechanic life and its very stressful. I am looking for help, I bought this 02 black on black sport cross around June. everything was great with the car for around a Customer: Hi. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). Swapped plugs, coil packs, and wires and saw no change. Jun 7, 2013 · Hi guys. Hij geeft ook de code voor de gasklep-regeleenheid. I had random multiple misfire and misfire on cyclinders 2356 with a pending misfire on 1. So i changed all my plugs and replaced the coil pack for cylinder 3, but the code came back, the Jan 18, 2018 · After I bent a GE rod at 5psi on the Borg Warner s256sx last year I rebuilt the engine, but I think I'm missing a few grounds? Apr 18, 2009 · misfire is usually caused by fuel or ignition. 0 liters) engine 525hp/520lb-ft torque at the flywheel (and this Jan 18, 2023 · so I bought this 02 is300 and it needed new new cam seals so I the process I replaced an few other things that desperately needed attention as follows; Cam seals Water pump/gasket Timing belt Belt tensioner Serpentine belt Put it all back together went to start her up and is now has a misfire '97 Lada Niva with the GM monopoint system, sometimes runs great sometimes runs shit, misfires at idle/under load, throttle hesitation and bucking when accelerating, also down on power. P0301 Lexus Code - Cylinder 1 Misfire Detected Customer: I have a 2002 Lexus IS300 and recently changed the timing belt. PLEASE help. Replaced the coil pack connectors cause mine were busted. P0302 Lexus Code - Cylinder 2 Misfire Detected Aug 25, 2022 · Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. Jan 5, 2022 · is300 is300 engine lexus misfire rough idle Jump to Latest 14K views 20 replies 9 participants last post by Austezza2J Mar 30, 2025 Apr 30, 2006 · I am intermittently getting P0301 cylinder 1 misfire. Started the car to check if I fixed it and got a code P0120 - TPS Circuit A Problem, and I got an issue where I could rev UP the car, but it would never drop revs. Every time I start the vehicle, when idling it feels like it wants to die. Nov 28, 2012 · Hey everyone, I'm a new IS300 owner and I love the car but I think it hates me. Can anybody shed a light on this now they are saying it needs further investigation Jun 25, 2022 · After doing everything I’d been throwing a code for cyl 3 misfire. please if someone had that problem help Feb 19, 2020 · With that being said, there are no misfires under highway loads, which a solid amount of my time is being spent recently, so I can live with it. Before the accident the engine ran great, it had an 01 gs300 engine. The oil then becomes contaminated over time and starts to conduct. Scanner shows P0300, P0301, P0302, P0303 and P0216. galleries and information on aftermarket parts for the IS300, IS250 Apr 1, 2025 · Hé allemaal, ik heb al een tijdje problemen met mijn automatische Lexus is300 uit 2001 met 217. 4K views 3 replies 2 participants last post by ill_mannered Jan 7, 2024 Sep 1, 2007 · 01 - 06 Lexus IS300 ; Battery Change = Engine Misfire? Battery Change = Engine Misfire? By absolutjh September 1, 2007 in 01 - 06 Lexus IS300 Share Oct 31, 2020 · Yes and no, I thought I had gotten the misfire code fixed, but recently I have been getting misfire in cylinder 2 and 5. He had disconnected the wires which sense the physical key presence Customer: 2004 is300 Mechanic's Assistant: Thank you for providing the model and year. The gas cap for your Lexus IS300 serves multiple purposes. There are 3 ports, 1-2 are typically capped and these caps split and fall off. I pulled up a P0300 (multi misfire) a P0302 and a P0306 (cyl 2 and 6 misfire) I thought it was the flow meter. When I checked with a scanner, it indicated that cylinders 4, 5, and 6 are misfiring. I had no problem with the car up to now. nothing sounds put of the ordinary etc. I went ahead and replaced the no 4 spark plug. P0305 Misfire Detected - Cyl. Thanks for your input! The car has 157k miles on it, and I haven't cleaned the throttle body but that sounds like a good idea. It's and OBD2 code and stands for: P0305 is certainly a cause for concern, and should be considered a threat to the drivability your IS 300. had a random misfire engine not throwing codes but could clearly hear it, on cold starts (between -5 and -10) car would hicup while idleing, once at operating temp it would run normal idle normal zero issues. No other codes (other than b2s2 sensor since I took it out to run my wideband). MSM stock for now Cobra Project: FFR MKIII '65 Cobra Replicar - 427 cid V-8 (thats 7. 4 FX4 ~ Hers SOLD - silver '03 MR2 Spyder - white '91 MR2 hardtop - white '85 MR2, black '91 MR2 RIP - black '88 MR2, silver '86 MR2 Mar 30, 2025 · Ik heb een vergelijkbaar probleem: als hij warm wordt, daalt het stationair toerental en blijft dalen tot een paar honderd toeren per minuut, dan een paar misfires en dan slaat hij af. I found a P0302 misfire cyl 2. It destroyed the plug at the same time, so they were both replaced. The car runs rough ONLY in cold starts. I seriously reccomend removing, inspecting and cleaning the mass airflow sensor. Here are some causes and opinions I've observed related to IS300 misfires: Sep 29, 2015 · Once turned off and started again at temperature (or warm) it misfires and runs rough. i drove it home after checking my fluids i took the OBD scanner to see whats going on, hoping i May 4, 2015 · Today I cleaned the MAF sensor, reset the ECU, and then had misfiring at idle and it threw the misfire codes (random misfire + basically all individual cylinder misfire codes). I am trying to solve a misfire so I dove into replacing the spark plugs. The CEL came on so I took it down to Autozone and had it checked. '97 Lada Niva with the GM monopoint system, sometimes runs great sometimes runs shit, misfires at idle/under load, throttle hesitation and bucking when accelerating, also down on power. P0174 System Too Lean (A/F Lean Malfunction, Bank 2) P1123 Accelerator Full Close Switch Circuit Open -pending faults 7-P0300 Random Misfire. But a tech said that if it was the flow meter, it would throw a flow meter code or all the the cyl would misfire. Apr 11, 2007 · 2002 IS300 5mt. P0303 Misfire Detected - Cyl. P0302 Misfire Detected - Cyl. When I checked the codes I had about PO4everything. Can you describe any symptoms or warning lights that appeared along with the misfire? Customer: misfire at idle soon as I get to 2. Jun 10, 2020 · 01 - 06 Lexus IS300 ; Random misfire cylinders 1-5 Random misfire cylinders 1-5. Apr 12, 2007 · I'm dealin' with the same thing right now. looked up a few other things with the scanner and found out that cylinder #6 has over 60+ misfires and the other cylinders #2,#3 will have around 3-8 misfires. hard thru 4500 rpm 5 - when I felt it originally, I always lifted immediately & shifted assuming I Nov 21, 2014 · Recently under normal driving conditions, my 2001 IS started bucking and missing randomly. P0300 Lexus Code - Random Cylinder Misfire Condition Jul 29, 2012 · You're throwing lean codes on both banks(P0171, P0174) which means you're running rich, random misfires(P0300), misfire detected on cylinder 3(P0303), and P1780 is a malfunction of the park/neutral safety switch, which is on the side of the transmission. This can lead to a loss in power and acceleration, making it difficult for your vehicle to perform at its best. There is a light clunking noise when it warms up. 1. The first time I got misfire codes on all 6 cylinders and 0300 for random multiple. Jul 15, 2012 · We hooks it up to the scanner and all we get is a random misfire code. Typically, as the engine RPM increases, you won’t be able to “feel” the engine misfire as much. Treat P0304 with these codes like it has P0300. So when I went to swap around coil packs to see if that was causing it, I noticed the coolant hose sucked in like that. P0302 cylinder 2 misfire detected . I recently scanned my car with a OBD ll Tool and it gave me the code "P1349 Variable Valve System Malfunction" Does anyone have an idea what this coukd mean or how can i fix it? Any Aug 12, 2010 · 1st-Gen IS300. Once I got the engine into my 04 and got it fired up I’ve been having a constant misfire for almost 5 months. I work for a Toyota dealer and am friends with some pretty smart technicians, been helping me out hours and hours on end. Als ik stilsta, stationair draaiend, voel ik dat de motor een beetje Nov 23, 2013 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Sep 22, 2010 · P0301 is a #1 cylinder misfire and P0302 is #2 cylinder misfire. It drove perfect though. Later on I then got a code for p300 multiple misfire which were 4,5 and 6 I’ve gotten brand new wires and spark plugs and the May 28, 2013 · P0300 random/multiple cylinder misfire detected. any idea? only less for test, test compression in the cylinder 3 and fuel presure, i test the igniter coil and spark plug and i got fire in the spark plugs. P0305 Lexus Code - Cylinder 5 Misfire Detected Apr 20, 2019 · P0306 is a fairly common trouble code with the Lexus IS 300. The misfire happens only when the car is sitting still, or moving slow enough that the cooling fans kick on. Feb 23, 2014 · hi. I have an 02 is300, I got the NGK iridium ix plugs since i’ve heard on forums here that they are pretty good. 2, 13. I know a faulty vvt solinoid can cause a misfire in multiple cylinders, but how I don't know. So far, with some tinkering under the hood, ive got the misfire codes down to just p0300(random misfire) and p0301 (cyl 1 misfire), and the evap codes still pop up, as well as the p0420. There was a little white smoke coming out of the exhaust but A subreddit for first generation Lexus IS300 owners and enthusiasts. P0304 Lexus Code - Cylinder 4 Misfire Detected Is300 multiple misfire Car was running fine only throwing a few codes(o2 and maf if i remember) and now its throwing multiple misfires (1,5,6 ) maf intake air temp sensor some o2’s and a evap. next morning same thing. Sep 18, 2010 · ES - 5th Gen (2007-2012) - Ignition coil malfunction, misfire in all 6 cylinders. If I lay into it a little more instead of barely pressing the gas it won’t misfire It’s a very wierd misfire as if it just skips one fire or the fuel is cut for . Members Online Kellys Toyota dealership in Ireland has a one-of-a-kind IS200 with only 32 km (20 miles) on display from their collection. r/IS300. With the print out in hand it said Misfire #1 Misfire #3 Misfire #4 Apr 1, 2019 · P0304 + Other Cylinder Misfire Codes. not sure on the cause of this but it had been running and driving fine. Oct 11, 2015 · I noticed my 04 is300 would misfire at an idle, and especially when id put it in reverse. Whenever I press my brakes fully down all cylinders start to misfire. Apr 1, 2019 · P0303 + Other Cylinder Misfire Codes. Treat P0303 with these codes like it has P0300. If the misfire count exceeds the threshold levels and could cause emission control system performance deterioration, the ECM illuminates the MIL and stores a Diagnostic Trouble Code (DTC). I bought a 2001 Lexus IS300 automatic with 145k miles last Sunday. 2, 14. I interchanged the coilpack 2 to 6 and the problem stills on cylinder 2. It will misfire badly under WOT or under heavy throttle at low RPM. Garage have ruled out, spark plugs and coil packs. Oct 6, 2010 · the car will run steady thru 4500rpm to redline and NOT misfire/cut out. misfire; By Floyd Sr June 10, 2020 in 01 - 06 Lexus IS300 Share Oct 12, 2012 · So im randomly getting misfire codes on a cold start, its not consistent and you can't actually tell the car is misfiring it starts right up and runs fine. Did you do a compression test? Also there are spark plug seals on the inside of the valve cover. Apr 9, 2023 · coolant exhaust head gasket is300 is300 engine leak misfire oil oil leak Jump to Latest 6. Jan 28, 2010 · so few weeks ago i noticed my 01 IS300 E-Shift with 138,000 miles is having some sluggish/hesitation when giving throttle from a dead stop but it only does it about 70% of the time. 5. The car shaking when I give up to 10% of throtle. A subreddit for first generation Lexus IS300 owners and enthusiasts. Jan 19, 2023 · Hi All, I've been chasing a misfire on Cylinder 3 of a 2001 IS300. A few hours after I started noticing my CEL went on and my traction control light started flashing. P0303 cylinder 3 misfire detected . Mar 22, 2009 · Misfire on all cylinders except #3, MAF malfunction, TPS malfunction. P0300/pO303/0304; By Springer December 24, 2012 in 01 - 06 Lexus IS300 Share Oct 22, 2022 · I have a 2002 Lexus is 300 and had a bank 2 sensor 1 issue due to having aftermarket headers. and if it would cause a low compression in only one cylinder too. Aug 13, 2019 · So I have a 2002 IS300 that runs great aside from this. I swapped out coil pack 1-2 with 3-4. Go Faster misfire at idle. Sep 15, 2008 · Maintenance - Engine hesitation, power loss, sluggish acceleration: Potential fix - SUMMARY Symptoms: Gradually increasing car hesitation, power loss, sluggish acceleration, lowered fuel economy. O2 sensor light so replaced it, changed all the vacuum hoses. Made sure to triple check TDC on cams and crank every chance I could and counted 16 teeth between the lines both when i removed old timing belt and put on the new one on. y replace 6 new injector, new maf sensor, no vaccum leak, spark plugs wire are new, i swap the igniter coil and spark plug, but same problem. Sep 20, 2006 · however, that would at most cause a misfire on only two cylinders. Fingers crossed someone can help. Save Share 2001 IS300 Engine 2jz-ge w/SRT intake; HP header; Toyomoto ypipe Mar 22, 2008 · A random P0303 misfire cylinder 3 code?? Come in and enjoy our articles, galleries and information on aftermarket parts for the IS300, IS250, IS350. Sep 10, 2020 · Instagram: @jasonlazo- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -#IS300 #altezza #Lexus- - - - - - - - - - - - - - - - - - - - Sep 21, 2022 · So i’m kind of confused on why my is300 is throwing these misfire codes after i’ve done a change recently i’d say about a few days ago or almost a week from today. Things checked/replaced: Compression for cylinders 1-6 is at (PSI) 80, 30, 0, 59, 119, 180 Checked valve clearance No excessive oil visible after removing spark plugs No mixture of coolant and oil MAF Sensor replaced Valve timing checked Aug 25, 2022 · Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. Just a little bit, but now it misfires constantly. I am a new member but not new to Toyotas, my names Brandon and I am from Houston. It would happen mostly when pulling into a parking spot (at idle with the wheel turned at full lock), and while cruising at around 2k RPM. We checked timing, capped off some of the main vaccuum hoses one at a time to rule out a vaccuum leak, and we unplugged certain things like O2 sensor, VVTi, etc. Apr 13, 2019 · P0305 is a fairly common trouble code with the Lexus IS 300. See full list on 700r4transmissionhq. I put oem ones back on and got new o2 sensors and that code went away. Dec 2, 2009 · My IS300 is having a lot of problems right now. 2. ) Jump to Latest 3. Checked the coils, they all seemed to look good physically. you need to start checking So I have been battling this issue ever since I bought the car. 3840 misfire at idle. Oct 16, 2020 · 2002 IS300 Codes P0300, P0304, P0305, and P0306 (Random Cylinder Misfire, 4, 5, and 6. pull out the coil packs and hook up the wire and plug to it. It's and OBD2 code and stands for: P0306 is certainly a cause for concern, and should be considered a threat to the drivability your IS 300. Nov 6, 2022 · i have a 2004 Lexus is300 with 255k miles. I cleared the codes and got the same a week later, clear Go to IS300 r/IS300. P0301 cylinder 1 misfire detected . You would instead have misfire codes stored. put it directly to a peice of metal on the motor and start it. I have changed all the plugs, ignition coils and plug wires and I still have a stubborn misfire that I cant seem to figure out. Some people are still dealing with driveablity issues. It appears to be on time, but it's misfiring. Well actually a couple of days ago it would kind misfire every 2-3 minutes. P0303 Lexus Code - Cylinder 3 Misfire Detected Apr 2, 2009 · is300-Multiple/1,2,3,4,6 cyl misfires. Plugs 4, 5, and 6, black as can be. The Lexus dealership basically said your car is running fine and it is Aug 31, 2014 · Now I am faced with the misfire issues. Thanks for the info. Sep 29, 2020 · So I just finished timing belt job on my 2001 IS300 [Automatic] with the OEM kit with cam/crank seals, WP, etc. Since the misfire Freeze Frame was at idle the problem is not likely ignition related. Oil by itself does not conduct. When those seals fail, oil gets up into the spark plug chamber and causes a misfire. This raw fuel hits and burns in the cat and can damage it. Nov 19, 2018 · If the misfire moved to cylinder number 4, then you have determined that the coil pack is faulty and needs replacement. Mar 26, 2022 · I have a misfire anywhere from 1500-3000rpm if I’m slightly on the throttle. 8K views 6 replies 4 participants last post by 1988_Supra Apr 16, 2012 Feb 12, 2016 · IS300 won’t start; Long cranking time; Engine misfire; Check Engine Light ON; Of course one of the early warning signs is your IS300 check engine light. It has 240k miles. 000 km). I had a red 2003 is300 that was wrecked with 88k miles. May 6, 2013 · Is300 RWD "Manual" Going under major surgery Save Share Reply Quote Like Jan 25, 2025 · Hello folks, My trusty 75k IS200 has started misfiring - engine light and TRC light came on. Mar 28, 2025 · Hey y’all, I’ve been having issues for a while with my 217k mile automatic 2001 lexus is300. Nope definitely plugged in :/ Apr 23, 2007 · I did the right-up because I read every P0300 and misfire post in this forum and everyone seemed to have different causes and solutions. I haven't washed the engine bay, but I drive on "E"mpty a lot. - started up my car the other night and my engine light came on, trac light came on VSC msg came on the dash, engine was rough idling. P0302 will often be accompanied by codes P0301, P0303, P0304, P0305, etc… These codes indicate a misfire in cylinders one, three, four, and five, respectively. ADMIN MOD Cylinder 6 Misfire? Code reader says cylinder 6 Nov 4, 2010 · Random Misfire Detected P0301 Misfire Detected, Cylinder 1 P0302 Misfire Detected, Cylinder 2 P0303 Misfire Detected, Cylinder 3 P0304 Misfire Detected, Cylinder 4 P0305 Misfire Detected, Cylinder 5 P0306 Misfire Detected, Cylinder 6 P0307 Misfire Detected, Cylinder 7 P0308 Misfire Detected, Cylinder 8 P0325 KS 1 Circuit Malfunction P0330 Jul 5, 2013 · 2002 Lexus IS300 3. The nice thing about P0306 is that it's a cylinder specific trouble code, which makes diagnosing the Aug 21, 2024 · Hey guys I’ve been fighting this misfire p0300-306 for months now, like Pullin my hair out. General Discussion Apr 15, 2012 · is300 coil misfire Jump to Latest 2. Suspect an ignition-related cause or a vacuum leak. 2K views 6 replies 3 participants last post by kjet85 Jul 12, 2022 Oct 30, 2022 · ok so ive got a 04 lexus is300 and the check engine light is on. Backstory: I purchased the car from somebody who had broken the ignition casting and the car was stranded in his car port. I dont belive that bolt to be your problem. maf sensor has no problem; i put new o2 sensors, also new pcv, new coins and etc when i zerod my car by Battery my car starts and not have any misfires, but after 30-40 km misfire on 1 and 3 cilynders starts again. The nice thing about P0305 is that it's a cylinder specific trouble code, which makes diagnosing the May 25, 2017 · 1st-Gen IS300. I had an oil leak and If your Lexus IS300 is having trouble starting, idling rough or has a sudden change in the position of the throttle pedal, this could be a sign of a bad mass airflow sensor. 6. Mar 4, 2018 · 2001 Lexus is300 misfire. I replaced wires and spark plugs for maintenance 600 miles ago. P0304 Misfire Detected - Cyl. P0306 Misfire Detected - Cyl. Feb 15, 2024 · If the CEL is flashing that means it's a hard misfire, the fuel isn't being burned completely. Replace spark plugs and spark plug wires/ignition coil packs if needed and recheck for misfires. while Apr 14, 2006 · 1988 MR2 SC - 2002 IS300 Sportcross -2010 F250 6. Misfire DTCs Service Category Engine/Hybrid System MarketEngine Mechanical USASection 2018 - 2020 IS300, NX300, RC300 VDS(s): AA1D2, AARBZ, AARDZ, BA1D2, Nov 25, 2021 · Hello all, and happy thanksgiving. what i would do is, take out the ecu fuse and fuel relay. Low fuel pressure can cause intermittent misfires on multiple cylinders. The car shakes when I rev it to about 2. Whenever I try to come to a hard stop the car doesn’t want to stop fully. Idles smooth, pulls strong and healthy. 1) When I cold start my car, there is a faint odor of unburned gasoline. 000 mijl (ongeveer 349. 5 to 3 rpm smooths right out Mechanic's Assistant: OK. So I replaced the cyl 4 coil pack, same problem. A leaky valve cover gasket, for example, can flood the spark plug cylinders with oil intermittently, causing Oct 18, 2013 · @jasonm4. Jan 6, 2024 · first gen is300 misfire misfire at idle misfire cylinder 4 5 6 Jump to Latest 1. Dec 14, 2016 · EML Flashes as it misfires Come in and enjoy our articles, galleries and information on aftermarket parts for the IS300, IS250, IS350. saftfx lijeoj qcoqdk ppjjxh tlm dhjs iah xtbpspwt imnyv opd