I just changed sparks plugs and camshaft actuator silioniod and my truck will barely idle.had a cel before that was constant on and now it flashes.Took out for a short drive and it is way down on power.
The spark plugs are ac delco iridiums,,I didn't gap them.I read some where they are already set at proper gap.I will take the coil packs off again tomorrow to make sure they are seated correctly.I put the dialectic grease on the end of the coil pack.Is that where it is suppose to go or did I need to remove the rubber piece.
How much dielectric grease and exactly where did you put it?
I wouldn't use dielectric grease except a super-light film, just barely enough to feel it on the tip of your finger, applied as a film to the inside of the opening in the coil-pack.
Dielectric means it doesn't conduct electricity.
You only want a tiny smidge to prevent the rubber part of the end of the coil-pack from sticking to the end of the plug.
You do not want it all over the plug's metal end.
Same thing with anti-sieze grease on the plug threads.. barely any at all, almost none.
Thanks Rick crew,I put it on the end of rubber,that might be my problem.I put more than just a light film.I will pull all coil packs and remove it and pull sparks plug to clean them off.I appreciate the help.
I just got through cleaning the spark plugs and the copper electrodes and the truck is idling a lot better.I still have the same problem I started with.The truck will idle at 500 rpm then surge to 700 rpm.A constant up and down.
You may need to perform a crankshaft sensor relearn after you installed this new exhaust camshaft actuator solenoid or at least disconnect the battery and short the terminals together to rest the pcm adaptions.
My guess is you still need to perform a crank sensor variation re-learn procedure with a GM Tech-2 because your low idle speed and flashing check engine light is a very common problem after replacing a defective solenoid.