IAB and TPS help??
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Senior User
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From: on the garage floor. lol!
IAB and TPS help??
i recently cleaned the throttle body and maf on my 94 f150 302. after i put it back on the idle dropped to 400 to 500 rpms. i unplugged both IAB and TPS. i also left one plugged in and the other unplugged and vice versa while the truck was running. there was no change in how it idled. it use to idle around 700 to 800 rpms. i was wondering if the IAB was clogged with dirt and oil from the cleaning and could not figure out what if anything why the TPS wasn't working. i used the crc throttle body cleaner 2 cans. it was filthy, and maf cleaner. can the IAB and TPS be taken apart to be cleaned?? i did let the truck warm up for about 10 to 15 minutes. i also was thinking about the voltage, but i don't have a volt meter available. should i just replace both parts?? don't know what to do about this. help please...............thank you.....................
Senior User
Joined: Oct 2006
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From: Kingwood, Texas
If you have to replace the TPS, Autozone was the cheapest I found. $26 with a two year warranty. I replaced mine about two weeks ago. I normally refuse to go there, but it was about half as much as everyone else.
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From: on the garage floor. lol!
sorry for getting back late to this post........xmas shopping with the girl friend. you know how that goes.......thanks for the response.....i will look into pulling the codes. haven't been driving it all. did start it up and it took a few cranks before it started and has a hard time idleing. got to hold the gas a little until it feels like it can hold its own. thanks again for the feed back........
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
This happens a lot when someone cleans the TB.
You took out the solenoid in the IAB (IAC valve) and the valve needs to be replaced.
If you are going to clean the TB and you should take the IAB off before you clean it.
You took out the solenoid in the IAB (IAC valve) and the valve needs to be replaced.
If you are going to clean the TB and you should take the IAB off before you clean it.
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From: on the garage floor. lol!
thanks conanski and subford for the help. i just replaced the IAB valve and the truck ran like new. i was like damn i couldn't believe it. thanks again for the help guys. i am very happy again. have a great new years and see on this site in the coming year........
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