Hey guys, After switching to a Prius COP setup, I’ve run into another problem. While driving, the car will randomly start to misfire. The only way to fix it is to turn the ignition switch off and back on (usually it goes away after the first try). It doesn’t matter whether the car is cold or...

Hi, back with more issuesAbout a week ago I installed my alternator back in the car as I had it fixed, it seemed to work fine for a few minutes but when it got to operating temperature it had a severe misfire and would not accelerate unless I pumped the pedal a bunch of times repeatedly pretty...

Hello everyone,I have a 1997 Mitsubishi Eclipse RS Auto with 97,000 miles and primarily all stock except the CAI and I've been struggling with a misfiring issue. On cold starts it would rev to 1000-1100 RPMS and fluctuate between 800-900. At times it would get as low as 700 RPMS when at a...

All,There's a few articles related to this topic but haven't seen anything recent. Just wanted a concise answer if possible.Issue has been a backfire (power drops and it pops and bangs out the exhaust) at higher boost levels. Sometimes its starts as low as 24psi and other times its pretty...

I have a 1991 Plymouth Laser RS 2.0 Non Turbo that runs fine even after the engine is hot BUT if I turn in off and restart it while its still hot there is a very bad misfire and the check engine light will come on. Unfortunately no one has a scanner that will work for the car anymore. Any idea...

My car: 1998 Mitsubishi Eclipse Spyder GST. My car is pretty stock, only has the Injen intake and a cheap blow off valve. Yes I know, I should not have the blow off valve venting into the atmosphere, I will be fixing this once I get this misfire resolved.Please keep in mind through out this...

Hi everyone,I'm new around here haha, but I come to ask for help on my 1995 Eagle Talon TSi. I was driving it a couple days ago, and it randomly started misfiring, didn't give me power and was like hesitating/buffering while I was driving around 15mph. The tach needle dropped to a little...

Hello all! I have the OEM CD/Cassette combo radio in my 1997 eclipse. It worked great until it started glitching out every now and then. Now it says 'OFF' and won't let me input the code. I have tried the method of leaving the ignition on ACC for an hour or so but still doesn't let me do...

Hello all, I have a 1997 Eclipse GST stock 2.0 Turbo with an auto transmission. 115k miles. Lately it has been missing when you get on the gas or even when just trying to accelerate between 40-60 mph, but runs totally fine at idle or lower speeds.We've recently put in new plugs and wires...

Last week I blocked off my FIAV and accidentally overheated my car.Since then my car has been misfiring randomly when warmed up. It doesn’t happen all the time but when it does the only way to get it to stop is to shut the car off and start it again.I have also been running super rich...

Car runs on cylinder's 3 and 4, cylinder 1 and 2 seem really weak as not working when i unplug injectors but cylinders are getting some fuel when i pull the plugs. Car sounds like a subaru. I have a COP setup so can't be a plug wire issue and all are getting spark. Put a new fuel pump to make...

Hello all. I have a 1998 talon tsi. After 10min of driving the car develop a random missfire/studder I noticed if I unplug my cam sensor on left rear of engine the missfire goes away instantly. Is sensor no good? Other things to check? The sensor was new from rock auto last year. Only driven...

Hello everyone! I will skip the storys and get to the point (if you want 'em, let me know). I posted this on DMStalk, now here to increase my feedback chance:I got a 93' Eclipse 2.0L 4G63 DOHC N/A 152.000 KM and after sitting for about 3 years it has the following issues: 1. rough idle: RPM...

Hello all.Need to pick your brains real quick. At idle I can hear a hollow, misfire sound. Doesn’t affect my AFR, idle is steady.While cruising, I hear the same hollow misfire sound, my AFR goes rich (12.7:1-12.2:1), and the car stutters for a split second. It’s random while cruising at...

Not sure what to call this other than moody bogging issue. Ever since I bought my 1999 GST my car has had a really weird bogging problem. I start the car and it runs fine and normal for a few minutes, but then the RPMs drop super low and it starts idling really really rough like it's having a...

Car runs fine under load, and even when you start it for the first 5 or so seconds when idle is high, When idle settles at around 850 you can really feel the engine vibrations and misfire. The Galant is running and driving but the vibration is extremely worrying, at stop and go traffic the idle...

methinks this engine is not running right bc it sounds as if one cylinder here and there misfires. it shakes a bit when idling but picks up when it revs higher. it lacks a bit of power when i drive it. i cleaned up and re-gapped spark plugs, same with plug wires, my injectors are working...

Hey ya'll, I may have an issue with engine management rather than anything else but could use some help narrowing it down.Running a 6 bolt block with black top CAS in 1998 spyder. Tuning with ECUFlash and EvoScan. Currently the turbo is upgraded to a big 16g (or is it an Evo3) cant remember...

Hey guys, I just got the car back and running after it sat for a little over 7 months. I had a stage 1 SBC installed and now I notice it's breaking up in 2nd and 3rd sometimes.It seems to happen randomly, but only when I stab it. If I roll into the boost gently it'll be fine and rev all the...

Hey yall i'm confused as to why my 2g (6bolt 7head with a 98 stock black ecu) runs with the spark plug wires swapped as if its a 95-96 Car misfires sputters like hell and i have a 1g green CAS Sensor and i've tried the stock 4123 order it wont even start in that order Any ideas?edit: theres...

So i recently bought a 99 eclipse gs and got the head gasket done and now after the first start up of day and i drive maybe a 1/4 a mile the CEL comes on blinks i stop giving it gas it stops blinking it will misfire once or twice and then it drives like normal beside when driving on any inclined...