Check Engine codes help!!!
Thread Starter
Instructor
Joined: Jun 2011
Posts: 116
Likes: 5
From: Estero, Florida
Check Engine codes help!!!
I keep getting codes P0300 Random misfire and P0171 system too lean bank 1. The car shakes (with a really strong gasoline odor) only at idling and/or chokes when starting on 1st gear from a stop, no issues under acceleration, down shifting, etc, the car feels responsive otherwise. So far I've put new plugs and wires, cleaned the MAF sensor, air filter, throttle body and checked for vacuum leaks. Mods are Vararam CAI, LT headers, Diablo tune, all done approx 3 years ago without any issues afterwards. Suggestions are appreciated. Vette is a 2005 with 89k miles on the clock btw.
Last edited by cedp83; Oct 9, 2014 at 10:35 PM. Reason: added year and car mileage
Team Owner
Joined: Sep 2005
Posts: 20,352
Likes: 568
From: Ventura County, Calif
Might also ask in the C6 Tech Forum.
As I read your post I thought, check the plug wires at both ends first. But if you put new plugs and wires in/on to try to fix the problem then obviously they aren't the problem. But try the Tech Forum too.
As I read your post I thought, check the plug wires at both ends first. But if you put new plugs and wires in/on to try to fix the problem then obviously they aren't the problem. But try the Tech Forum too.
Le Mans Master
Joined: Feb 2007
Posts: 8,514
Likes: 235
From: Currently somewhere in IL,IN,KY,TN,MO,AR,MS,AL, or FL
- MAP sensor
- MAF sensor
- Vacumn leak
- Fuel pressure
- Fuel injectors
- Contaminated fuel
- Leaking exhaust in front of O2 sensor
- Cracked EVAP canister
- EVAP system leaking or plugged
- PCV system leak
- O2 sensor
- O2 wiring
Thread Starter
Instructor
Joined: Jun 2011
Posts: 116
Likes: 5
From: Estero, Florida
Ended up being front O2 sensor, thanks for the help gents.
