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misfire

  1. Random Misfire Issue

    General Maintenance, Troubleshooting & Accidents.
    Looking for some help here. I have a 2017 WRX, the car has a full 3” Turbo Back Exhaust, Cobb CAI, and Cobb tuner. I randomly had an issue where my car will start great but immediately kill itself. Sometimes taking multiple times to actually run. Then you can feel a miss while driving. The car...
  2. WRX pulling LOTS of codes.

    STi Technical Forum
    I own a 03' Bug Eye. She's been running kinda rough idling but drives pretty smoothly, I also have a small exhaust leak. So I was bored today and was kind of surprised to see what codes it threw. Any idea / comments / solutions?? P0102 Mass or Volume Air Flow Circuit Low input P0113 Intake Air...
  3. Dyno Tuned, now misfires like crazy...

    Tuning: Electronic Engine Management
    I recently put on a Invidia catless DP, borla hush exhaust, HOA 3 port boost solenoid, and has an SPT intake. I went and got it tuned at a local tuner. He said tune is done but my plugs were bad and car has a slight misfire at higher rpms due to this. I asked if everything would be fine with...
  4. 2005 wrx 36k miles low compression engine issues? help!

    Engine Modifications
    Alright so I have a 2005 wrx 36k miles bought a month ago been having problems ever since back at dealer under warranty but its a used lot so its taking forever...finally ran a compression test and I was told cyls 2 and 4 are low and 2 is real low. Didn't give me exact numbers. Ik observed some...
  5. HELP! Misfires and what i bellieve is "limp mode" :((

    Engine Modifications
    Okay so, just recently bought an 05 limited rex with 36k miles. Ran fine the day we test drove it and then the day we got it it was acting strange. was originally told it was a TPS and it got some bad gas and that i was supposed to run it out and fill it up and w.e still no good. went back next...
  6. The old hesitation unanswerable question...

    General Maintenance, Troubleshooting & Accidents.
    I have a 1994 wrx stock jdm and it has developed a hesitation when i give it all its got or there abouts... it drives nice otherwise... Subaru dealer says not sure maybe coil cut in and out... but no engine lights equal no diagnosis... and ive seen people tear cars apart fixing everything except...
  7. 96 WRX sti misfire/backfire under hard acceleration

    General Maintenance, Troubleshooting & Accidents.
    my 96 wrw misfires/backfires under hard acceleration (still pulls hard just cuts in and out) installed new NGK BKR6EIX plugs , engine runs fine other than that maybe small backfire between gear changes at less than 4000 rpm some times. engine typeEJ20GDW5PE, stock boost i think. any ideas thanks
  8. 02 wrx misfires and runs rich

    General Maintenance, Troubleshooting & Accidents.
    well my 02 wrx has been misfire and running rich for a while.at first i thought it was the spark plugs which stopped the misfires on 2 3 and 4. but still misfires, but when its going up hill in 4th or 5th gear the cel will flash for about 5 seconds and not stay on and in all the times Ive reset...
  9. Engine Misfire - Can't pass emissions - Need Help

    Tuning: Electronic Engine Management
    Hey guys first off thanks to anyone who is willing to help me with this issue. My 04 STI has been having a problem with misfiring. I know exactly when the car is misfiring because at around 6000 rpm the car will have the check engine light flicker about twice. My codes are P0301, P0302...
  10. if one coil goes, do I need to replace all 4?

    General Maintenance, Troubleshooting & Accidents.
    Hi, so I am a new owner of a 2002 WRX and the check engine light has come on. According to my mechanic, this could be due to 60 different things. He says my car is misfiring and usually due to coils or spark plugs. He says the spark plugs are good and that he is checking the 3rd coil and that...
  11. Complicated Misfire 99 Impreza Sport

    General Maintenance, Troubleshooting & Accidents.
    Hello All, Thank you for reading, and for those that help, THANK YOU VERY MUCH!!! Okay, so here is the diagnosis: Misfire cylinder 2, tossing a code, activating Mil Check everything: Plugs, Wires, Coil pack. Everything seems okay. Only sputters/misfires under heavy load, such as rolling at...
  12. Misfires messing with my mind

    General Maintenance, Troubleshooting & Accidents.
    I have been fighting a misfire in cylinder 1 and 3 for about a month now, changed the 02 sensor, cleaned the injectors, replaced the plugs and the coils............WAT IS THE PROBLEM????????!!!!
  13. Fuel Injector replacement

    General Maintenance, Troubleshooting & Accidents.
    CEL- Misfire in Cyl 1 Hello, If anyone can help me. I've got a check engine light on an '03 WRX that reads a misfire in cylinder 1. I've had the coil pack replaced and the plugs and plug wires are good. I figure that the most likely issue is the fuel injector. The light only comes on after...
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