Black_Cat_DSM
Proven Member
- 51
- 80
- Aug 29, 2022
-
Royal Oak,
Michigan
Hello Everyone,
I am running into an issue that I have not dealt with before, and I am not finding a good starting point through my searches.
Car is recently rebuilt with a 6 bolt in a 96 Talon.
ECMLink V3 installed.
GM 3.5in MAF
GM 3 bar MAP
MHI Small 16g
AEM Wideband simulating front O2
Stock throttle body, intake manifold
Attached is a log I took today.
I did not go into boost at all since the engine is still in the break- in period.
Around 10 mins of driving and I instantly got a MIL for P0300 and the car started to run very roughly. I was able to drive it slowly home but it was not happy about it.
I then turned off the car, removed the MIL code, and restarted it, after which the car ran perfectly fine again.
I had it idling in the driveway for another ten minutes but there was no real sign of a misfire or anything abnormal.
Car runs rich for sure, it needs to get tuned which I am doing next week.
I have checked that the O2 sensor is cycling properly.
There are no discernable boost leaks.
TPS, ISC, MAP, MAF sensors tested acceptable.
PTU replaced (no change to behavior).
I can check the coils and other ignition parts but I am not sure that is causing the issue, since it's not specific to a particular cylinder.
Any help is appreciated!
I am running into an issue that I have not dealt with before, and I am not finding a good starting point through my searches.
Car is recently rebuilt with a 6 bolt in a 96 Talon.
ECMLink V3 installed.
GM 3.5in MAF
GM 3 bar MAP
MHI Small 16g
AEM Wideband simulating front O2
Stock throttle body, intake manifold
Attached is a log I took today.
I did not go into boost at all since the engine is still in the break- in period.
Around 10 mins of driving and I instantly got a MIL for P0300 and the car started to run very roughly. I was able to drive it slowly home but it was not happy about it.
I then turned off the car, removed the MIL code, and restarted it, after which the car ran perfectly fine again.
I had it idling in the driveway for another ten minutes but there was no real sign of a misfire or anything abnormal.
Car runs rich for sure, it needs to get tuned which I am doing next week.
I have checked that the O2 sensor is cycling properly.
There are no discernable boost leaks.
TPS, ISC, MAP, MAF sensors tested acceptable.
PTU replaced (no change to behavior).
I can check the coils and other ignition parts but I am not sure that is causing the issue, since it's not specific to a particular cylinder.
Any help is appreciated!