Hi all camaro lovers;

Im new here and im sorry for my bad english.

I have 1997 z28.

During rough idle problem i noticed that if the engine is cold , bank 1 and bank 2 injector cycles are equal. but after warm up bank 1 injector cycle 1ms bigger than bank 2.

I changed HO2 sensor but nothing changed.

İs it related with Pcm or something else.

Do you have any idea ??

 

Do you know the bank BLM numbers? Maybe the PCM is trying to compensate for a vacuum leak?