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misfire

  1. Issues after lim/uim gasket change. Long post. But i want to be detailed

    Naturally Aspirated
    So, 4 months ago I decided to say "**** it! I'm going to explore the country and find a new place to call home!" I got rid of all my stuff and jumped into my super reliable 1998 buick park avenue and hit the road working odd jobs for gas money. a few weeks into it I had I had coolant loss. No...
  2. L26 ICM questions

    DTC's, Problems & Troubleshooting
    Hey all, I have a few questions I hope the great minds on this forum can help with. 2008 Grand Prix, all stock, well maintained 166,000 miles, engine was running great until about three weeks ago. Started up and ran down my driveway fine as always, but suddenly lugged and sputtered horribly...
  3. P0304 code set but no drivability issues or symptoms

    Naturally Aspirated
    Soo...I got a misfire p304 code a few weeks ago and I could feel it the car struggle trying to accelerate at highway speeds. I replaced the ignition coil with one i had in my trunk from the junkyard and the car has been driving great since. I got 30.8 mpg on a 400 mile trip after i replaced...
  4. Misfiring Issue In My V6 3800

    DTC's, Problems & Troubleshooting
    First off I want to apologize if I have posted this in the wrong place as I'm new to the forums here, if it needs moved to a more appropriate place feel free to move it. Second, both "I'm sorry" and "thank you" for reading this entire post as it's a bit long and complicating! I am still a novice...
  5. 01 Park Ave Ultra Misfire

    DTC's, Problems & Troubleshooting
    EDIT: Solved the problem. Got a bad spark plug. Put old plug back in that cylinder, car runs great ! Someone told me to do that on a diff. forum and I find it so UNBELIEVABLE that a spark plug (new) could be bad.. BUT... I did it for giggles and because it wouldn't cost me anything.. AND...
  6. Loosing Coolant Series I

    Cooling System
    I have a 93 Regal Series I that has given me trouble since I got it. I have fixed most of the issues but i'm loosing water quickly. I live in Florida so i'm using water until i get this figured out -No external leak and I have pressure tested the system and it holds pressure -After topping off...
  7. Misfire 93 Regal Series I

    DTC's, Problems & Troubleshooting
    I have a misfire in my 1993 Regal Series I. The misfire is noticeable at start up but gets worse as the engine warms to operating temp or when the a/c is turned on. It has been this way since I got it. What I've done: -I have checked the coils both cold and warm and they are all within range...
  8. Random misfire? P0300 I'm lost!

    DTC's, Problems & Troubleshooting
    Hey guys, I have a series 2 supercharged in my 2001 buick regal. It has a newer shortblock, and everything else has about 130,000 miles. The problem I'm having is that it is having random misfires on the rear bank, so 2,4,6 I believe. It's a rough idle, but seems to clear up while driving...
  9. Engine won't restart when warmed up sometimes

    DTC's, Problems & Troubleshooting
    Hi all, Long time lurker, first time poster. I have a 1996 regal, 166k. The problem started around 3 years ago with the occasional car not starting, and has gotten worse since then. I only work a mile from home, so it's rare that I experience the problem on my way to work. What happens is when...
  10. Misfire in #4 cylinder...

    Ignition
    Alright, Im new here and this is my second post. Ive got a problem that started yesterday. Ive had this problem with my camaro (2000) where when I give it some gas...not flooring it but firm enough to get some speed. When I do this it seems to jump back and forth between 3rd and 4th gear usually...
  11. 1994 oldsmobile 88 Engine misfire, Hesitation

    Ignition
    Hello Everyone, I have a 1994 Oldsmobile 88 that misfires noticeably when warm and also a Hesitation when giving gas. No check engine codes. plus i have obd 1.5 so i cant check that easy. Transmission shifts funny when engine skips. Floor vibration on gas peddle at 2000 rpms and up. Only code...
  12. 1997 buick riveria Mis fire

    Introductions for new members
    Ok I just aquired a 97 buick riveria with 156k runs great when cold but once it warms up it starts to act like it is starved for gas or just missing. i took car to get cat inspected and all inners are gone so..... need cat but need and want to fix mis before putting cat on. its a 3800 s2 has had...
  13. 98 park ave ultra misfire/surge

    DTC's, Problems & Troubleshooting
    98 buick park ave ultra, 8th vin '1' 280k miles and still running strong (up to today) Replaced head, intake, and supercharger gaskets 10k miles ago. Used throttle body cleaner to eat the carbon buildup in the cylinders. Changed Fuel, oil and air 400 miles ago. Today I replaced plugs that...
  14. Severe Misfiring/Rough Idle

    DTC's, Problems & Troubleshooting
    I need help with my '01 GTP, 88k, no mods. It's running really rough. This is what's going on: I had put Mobil 1 Extended Performance 15,000 mile synth oil in my engine, and had driven the car for only 5,000 since then as of yesterday. When I'd started up the car yesterday, right away my...
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