blefevre

Alright, I am pretty sure I know my problem but I need to double check before I spend money. My idle was weird so I decided to clean my TB and IAC. I was very careful, cleaned everything out, and reassembled. I only took the TPS off to look at, I didnt touch it with water or anything. It looked clean and good.

Now the jeep idles crazy. At first it would stay around 200rpm, sometimes die, sometimes idle normally. I drove it around and eventually seemed fine. Now my wife drove it to work and said it idled around 1500.

So I think I messed up my IAC pretty darn good, I was just going to buy a new one. My questions is, is there anything else that could have went wrong? Could the tps be causing this even though I didnt touch it?

Thanks a ton!

4jeepers

Before buying anything try taking the vehicle on a long drive at freeway speeds. I know that you drove it around but you did mention how long or at what speeds. The ECM has to re-learn the settings of all the sensors on the vehicle if you had disconnected the battery. I had a similar situation on my XJ and this seemed to straighten it out.

blefevre

Hmm, I didn't disconnect the battery but I suppose it could be relearning the "clean" sensor. It's been driving about 10 miles stop/go and about 20 miles highway so far.

Eli Lilly

It should re-learn nearly instantly, there isn't any sort of substantial delay. It's more of a realtime feedback loop than anything.

-E

fishtaconc

1. you may have stripped the screw that moves the pintle in the IAC
2.You couldve torn the gasket on the IAC when removing/reinstalling IAC