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02 WJ 4.7 V8 05-09-2010 08:09 PM

Throttle body cleaner
so i need some advice/help about a week and a half about i decided to clean my throttle body bc i was about to hit 80,000 miles and so what i did was take out my IAC senor and cleaned that off with a rag and then i cleaned the whole throttle body off the car and this cleaner i body that is ment for throttle bodys said to spray the cleaner into the throttle body while it running and when i did this i notice about the next day my jeep was having a hard time starting im hoping i didnt ruin anything...can you guys tell me if i did anything wrong?


Frango100 05-09-2010 10:21 PM

Re: Throttle body cleaner
The IAC is not a sensor, but a stepper motor. It regulates the airflow in idle to achieve the right RPM and is also used during deceleration and when switching on the AC. Normally the throttle body cleaner does no harm, its only a good thing to drive around a bit after you have used it to get it all out. Did you use the cleaner also through the small air opening below the throttle valve ( the air passage which is regulated by the IAC), because there is normally quite some dirt present overthere. Maybe the IAC stepper motor is not well regulated anymore after the cleaning job. Just disconnect the negative cable to the battery and connect it again. The stepper motor will drive full close and full open, for the PCM to know this positions. Donīt do this with the IAC stepper motor removed, because there is a change that the plunger/spring will disconnect from the stepper motor ( as happened with me)......:(

StoneCold 05-10-2010 03:42 AM

Re: Throttle body cleaner
^ x2 on that. Also did you get any cleaner on the sensors? If so they can go funny.

02 WJ 4.7 V8 05-10-2010 07:01 PM

Re: Throttle body cleaner
thanks guys for the help i appreciate it alot but i didnt spray any throttle body cleaner in the IAC passage at all bc when i cleaned it i took it out and then sprayed the cleaner in there... the car worked perfect today no trouble starting it which is a good thing i think bc in my area lastnight it was so cold and when i went to drive lastnight it was just cold cranking

Milous 05-10-2010 07:11 PM

Re: Throttle body cleaner
I did a write-up a few years back covering TB cleaning for the WJ:

02 WJ 4.7 V8 05-11-2010 04:40 PM

Re: Throttle body cleaner

Originally Posted by Milous (Post 205330)
I did a write-up a few years back covering TB cleaning for the WJ:

thank you soo much man now i no the right way to clean it see i did both methods ..but thank you

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