Originally Posted by RGosen
Oh I am just having a idle problem once warmed up it will go from under 800 rpms and then rev up to about 1200 and then back to about 800 over and over every 10 seconds.
You have described a dirty IACV...
I cleaned mine up... and it corrected the erratic idle.
btw... the next step after the erratic idling...
is a piece of junk dead in the water. (no fire)
Oddly... a cel does not occur when that valve gets dirty.
Not sure if 100% IACV failure would even trigger a cel !?
A dealership may tell you it's faulty (value off), then offer to sell you another.
Sometimes they can be cleaned up... and will function correctly.
But the dealership tech's will only swap in a new component
and make no attempt at cleaning that.
If you insist on new... it'll cost you $$$
* Clean your MAF sensor too.
forget the valve shimming stuff...
at least until you have ruled everything else out.
I've seen engines with 400K on them...
never required a valve adjustment.
Not saying it shouldn't be checked on high mileage motors...
just saying... I think your problems lay elsewhere.