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  1. Chevy Impala 7th Gen Discussion
    A little backstory, my 2005 Impala Base 3.4l sheared a camshaft and ruined a block. My brother and I rebuilt another short block. I ruined a piston and a valve on cylinder 3. Cylinder 5 had low compression, after replacing 3, so we replaced the piston(tearing the motor down for a 3rd time)...
  2. Chevy Impala 9th Gen Discussion
    3.5 L flex lt impala 2010 Replaced coil, spark plugs, wires, and map sensor. Thinking it could be injector 4, but shoots no injector related code. Usually happens randomly when I'm going over 50mph and getting above 2k rpm. Really a pain because I put so much work in the car on non-related...
  3. Chevy Impala 7th Gen Discussion
    2005 Impala, 3.4L, 115k miles. Hello everyone. The Issue: Random misfire that ONLY happens at idle. I never get a misfire while I'm on the highway or otherwise driving around. It also seems to happen far more when the AC/heat is turned off. When I turn the AC on it hardly misfires at all...
  4. IOTM WINNER
    2018 Premier, 3.6 v6, 107k miles, about to change the spark plugs and clean the throttle body, other than that I've heard of needing to replace a "mass airflow sensor". There are no lights on the dash to check an error code. Any insight on the matter is greatly appreciated. Thank you and be safe.
  5. 1994-1996 Impala Reviews
    I've had my impala since 2017, currently at 270,000. My check engine lights flashes kind of slow, there's a rough (very rough where it sounds like a rod was thrown (please forgive my ignorance on terms), accelerating is jerky and disjointed, it cuts off on me randomly going down the road, and...
  6. 2000-2005 Impala Reviews
    I've got an 05 with a 3.8. runs rough at idle and driving. I get a cyl 1 misfire code, no other codes. I've replaced plugs, wires, injectors, and coils. No oil in coolant or anything, it's got good compression. Anybody got any ideas? I'm stumped at this point......
  7. Chevy Impala 8th Gen Discussion
    My baby Ja’Crispy is a 2007 LTZ with 240,000 miles. I do all of the minor work on the car myself. I changed the plugs and plug wires 20k miles ago and recently my car threw a code for cylinder 6 misfire. First thing I did was go ahead and buy a new plug and change it just to be safe and it...
  8. Automotive Discussion
    I am new here and in desperate need of help. I have a 2002 Impala LS. For the past few months I have had an issue with misfiring. It started as a rough idle occasionally but has now become a very often and sometimes violent misfire or surge. It will also often times stall at stops or sometimes...
  9. Automotive Discussion
    I have a 03 impala with the 3.8l v6. I've have had basicaly the entire ignition system replaced. I've had the injectors tested and cleaned with one being replaced after testing bad. I've also ran bg 44k through twice. I've replaced the fuel filter as well. It's only misfiring about 50% of the...
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