I hope someone can help me to figure out the issues I am having with my 05 Silverado 2wd 4.8 vortec, 158,000 miles. I have owned this truck from day 1 and it has been a wonderful truck that has given me no problems. The issue I am having it engine surging at idle, and missing if I shut the engine off for a few minutes like to get gas. It cranks fine, runs great when cold, and as long as the RPM are at cruising range not a single issue. I spits and sputters when I leave the gas station or store after shutting it off and restarting it.
Here is what I have done so far
1. New Delco Knock sensors,
2. New intake gaskets, o-rings for fuel injectors and fuel rail
3. New MAF Sensor
4. Clean Throttle Body
5. AC Delco Spark Plugs, Delco Wires
6. Checked fuel pressure 58psi
7. The only code I am getting is misfire.
Have an idea what it might be or what else I can try?
Thank you for the reply, I had not thought about that. I will look at this and see if this is where the problem is.