We'll I replaced my head gaskets with complete success. It took about four 8 second cranks and it fired right up as I watched icp build on scan gauge. It drove fine maybe a little rough for the test drive then the next couple days it ran smooth as can be. 100 mile trips each day. A couple days ago my CEL came on for p2285 icp low circuit. So I cleared it and it came back yesterday. My ICP ranges beautifully 650-1200 and my ICP volts seem to be fine .89 .91 at idle and 1.5-2 and IPR ranges fine too 22-40. This didn't happen before I did the head gaskets. I actually didn't even know where my cel was this whole time I've owned my truck til now. The wire harness was pull all the way out to the radiator when I did the work I don't know why I didn't inspect it. I also have a slight vibration while accelerating, don't know if this could be a symptom of a bad sensor. Are my ICP volts supposed to be higher?

 

Possibly a bad sensor or connector.

Try driving with the ICP disconnected and see if the vibration clears upon acceleration.

JOsh

 

Will do. But it started after the hg job and icp volt values seem good right?

 

ICP values look great, but the sensor could still be bad.

What does it read @ KOEO?

I would try:

Driving with ICP unplugged, improved inspect harness or replace sensor

No improvement:

Unplug EBP sensor and drive:

Improved? Same deal as ICP.

No improvement?

Inspect MAP hose and intake adaptor

Josh

 

May want to check your exhaust as well. Make its not hitting anything.