made2drag

ok, before i change out a possibly good tps sensor($50)...my car idles at different rpms. sometimes 500 rpms and sometimes 1500 or 2000 rpms. seems to be different when im in drive and when im in park. there are also times when it will be consistent at 750 rpms some days. is this definitely a tps problem or are there other sensors that could be bad?
also, if i need a new tps sensor, what brand is the best? thanks

joethuman

I recently had some idle problems as well. First place that most searches I found spoke of started with cleaning the IAC and the throttle body. I started with just the IAC and the passage it fits in. It had never been cleaned and was quite carboned up. That fixed my problems completely. YRMV.

Lt1Chris

yup sounds like idle air control valve like he said

made2drag

forgive me for my newbieness, but where is the IAC? i know where the mass flow is but not the iac. i definitely want to try that! thanks

made2drag

where abouts is that rascal?

joethuman

Not 100% sure on your motor, but on mine (2.8 V6) it's on the left side of the throttle body. Look for something that looks like a big plastic nut that's over an inch wide. Mine has a square 4 wire plug.

If you do a search on your motor and IAC, I'm sure you can get some better directions. Not sure if it's 100% the same on your motor.

made2drag

thanks bro....i did do a search just a minute ago and found an awesome thread!!!!!! https://www.thirdgen.org/forums/tech...-location.html

made2drag

i'll try this tonight....thanks for the info...i hope mine clears up too

Lt1Chris

go to a auto parts store and ask for a print out if not i look it up when i get to work

made2drag

i found this link https://www.thirdgen.org/forums/tech...-location.html

i'll try cleaning it really well and see what happens....thanks man

made2drag

i cleaned the iac valve with carb cleaner....CLEARED THE TROUBLE COMPLETELY!