Sorry guys but I got another question about the idle on my truck. Recently it seems like my truck has been starting up wierd when it is warm. In the mornings when I start the truck its totally fine idles up and everything then once its warm it idles at about 900 rpms. The problem I am having is after the truck is warm and I try to start it it starts but idles at like 400-500 rpms sometimes lower. Then after I drive around for like 2 mins its back up to about 900 rpms. I dont even have a clue were to start with this one so if someone could help me out....

 

Bump, someones gotta know this

 

timing i believe is the issue there. but someone will chime in with the correct answer.

 

I have heard thers is an individual fule injector that functions only for start up and that might be cloged. That happend to me and I had really rough startups. You mihgt check your throtle body and make sure it is sealing corectly. Other than that, I don't know for sure. I know my idle is often all over the charts as you described for no reason too.

 

Maybe look into the cold start injector. If it is bad it could be leaking fuel and causing a rich condition when the truck is warm.

 

I checked the tps and everything was ok except when i test with the throttle paritally open i get no resistance, I was going to take off the tps and check it out but there is a radator hose in the way. Ill check out the cold start injector, but will having a rich condition cause the truck to idle really low. I would seem to me to be the exact opposite, but ill check it out. Also how do you check the timing on a this motor?