engine idle problems .

while driving check engine light turned on, no serious issues until coming to a stop for awhile; then starts idle jumping from 700 to 1000 rpms. while traveling at higher speeds problem resolves. I am new to this have a few resolutions inside,but could really use other ideas if possible.

 

What is the error code stored in the computer say?

Sounds like you need to clean your maf and throttle body out. With that much rpm jump i would also be looking for vacuum leaks.

 

^^^^^^^^^^^^^ agree with this guy.

 

Find someone with a Scanguage or code reader
and don't just guess at it.

 

try cleaning out your IAC. they are notorious for getting gunked up and causing poor idle. it can get to the point where the truck will die at a stop light.

 

my buddy hooked up his computer and found cylinder 5 was misfiring. time for a tune up. thanks yall.