1990 GMC Sierra low idle and stalling
I have a 1990 k1500 low idle and
stalling problem, I replaced my fuel
filter and spark plugs, i changed the
fuel pump 3 years ago. Weird thing is
when I rev the engine the oil display
moves with the reving of the engine.
Any insight would be great
Check air filter and clean throttle body with throttle body cleaner. Add fuel injector cleaner to gas tank.
I clean the egr, idle valve, and the carburetor and it's not stalling any more, it is a little rough from idle to 20 mph..
Put in some fuel injector cleaner and take it out on the road and hit the passing gear a few times that will help clean injectors and carbon build up. Be careful no speeding tickets. Did you also check the air filter ?
Looking for a Used Sierra 1500 in your area?
CarGurus has 65,336 nationwide Sierra 1500 listings starting at $1,995.
Search GMC Sierra 1500 Questions
GMC Sierra 1500 Experts
Related Models For Sale
Used Cars For Sale