I have a 99 S-10 4.3 liter v-6 that runs really rough while cold, after it sits for about 30 minutes from the initial start up it runs fine, can anyone tell me what senor i need to replace or whats wrong?
is the CEL on?
There are no codes or check engine light on.
Vacuum leak, Injector not sealing off letting gas into the cylinder, Start of a blown head gasket leaking antifreeze into cylinder and sealing off as it warms up.
Thank you tuff4x4, I will check for vacuum leaks and injectors leaking. I have never over heated the motor and it doesn't use any antifreeze, but I will keep that in mind.
Looking for a Used Chevrolet in your area?
CarGurus has 772,576 nationwide Chevrolet listings starting at $250.