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  1. #1
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    Default Cleaning Throttle body and IAC



    My 1988 Comanche Renix 4.0 has had a very low and rough idle for awhile now, then it started dieing at stoplights so time to clean!

    This is actually a very easy job to do and as long as you have a set of Torx bits (As a Jeep owner you do have a set... right?) it only costs the price of a can of carb cleaner.

    First, remove the breather tube.
    It's the black slinky looking thing.



    Next unhook the wiring, three plugs and done.
    Now remove the entire throttle body, three Torx bolts and it's off.



    Throttle body before.





    IAC before.





    I cleaned them with a tooth brush and carb cleaner, did a good job.

    Throttle body after.





    IAC after.





    Don't forget to clean where the IAC lives.



    After cleaning up everything, put it back together.





    Success!
    Love when a project works the way it should.
    The Comanche went from idling around 300 to 400 RPM and dieing to this!



    Well worth the hour or so it takes!



    Quote Originally Posted by cantab27 View Post
    na bro...thats me................................................ wig on and my man boobies bra working...................................oh dear
    The Fleet:
    1986 Comanche X - Parts Rig
    1988 Comanche Pioneer - DD
    1991 Wrangler - Wife's DD
    1991 Cherokee Sport - Back in the saddle!
    1993 Cherokee Sport - RIP Old Friend!
    1995 Cherokee Sport - Parts rig

  2. #2
    cantab27's Avatar
    cantab27 is offline Level: Uber Jeep Cherokee Trailer Queen
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    Default Re: Cleaning Throttle body and IAC

    nice wee write up mike with pics...a+++

    one question....
    said toothbrush , how do you sneak the wife's one outta the house with out her knowing........:
    keeping it red........

    I DRIVE A BARBIE JEEP

    Quote Originally Posted by XJ4IV
    .... lol Im a jerk tonight!
    Originally Posted by bigjim350 View Post
    Think I would go that crazy too if my Jeep turned white

    http://www.youtube.com/watch?v=XGg0C...eature=related


  3. #3
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    Default Re: Cleaning Throttle body and IAC

    Quote Originally Posted by cantab27 View Post
    nice wee write up mike with pics...a+++

    one question....
    said toothbrush , how do you sneak the wife's one outta the house with out her knowing........:
    She don't know yet.....


    Quote Originally Posted by cantab27 View Post
    na bro...thats me................................................ wig on and my man boobies bra working...................................oh dear
    The Fleet:
    1986 Comanche X - Parts Rig
    1988 Comanche Pioneer - DD
    1991 Wrangler - Wife's DD
    1991 Cherokee Sport - Back in the saddle!
    1993 Cherokee Sport - RIP Old Friend!
    1995 Cherokee Sport - Parts rig

  4. #4
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    Default Re: Cleaning Throttle body and IAC

    Nice write up...I'll bet my '92 could use a quick clean as well...Thanks!

  5. #5
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    Default Re: Cleaning Throttle body and IAC

    Good job, but dont use carb cleaner....Always use Throttle body cleaner only.
    89 Pioneer, 4.5 RE, 32s, 8.8, 4.10s, SYE
    96 ZJ, DD
    72K5,
    69 VW Rail

    _l__________
    //___l__,\____\,_
    l_---\___l---[]IIIIII[]
    ()_)----()_)--O-)_)

    I Bore throttle bodies-PM for details
    Parting 87-96 XJs

  6. #6
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    Default Re: Cleaning Throttle body and IAC

    Quote Originally Posted by Thexjfiles View Post
    Good job, but dont use carb cleaner....Always use Throttle body cleaner only.
    Whats the problem with using brake cleaner?

  7. #7
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    Default

    Bad for oxygen sensors.
    Quote Originally Posted by CherokeeCountry
    I can't cook though. Unless you count the few seconds where I allowed Dylan to saute...

  8. #8
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    Default Re: Cleaning Throttle body and IAC

    I agree, great write up. I have 213K on the odometer so I'll be mine is due as well. Is throttlebody cleaner something I should be able to pick up at any auto parts store?

  9. #9
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    Default Re: Cleaning Throttle body and IAC

    Yep, easy to find.


    Quote Originally Posted by cantab27 View Post
    na bro...thats me................................................ wig on and my man boobies bra working...................................oh dear
    The Fleet:
    1986 Comanche X - Parts Rig
    1988 Comanche Pioneer - DD
    1991 Wrangler - Wife's DD
    1991 Cherokee Sport - Back in the saddle!
    1993 Cherokee Sport - RIP Old Friend!
    1995 Cherokee Sport - Parts rig

  10. #10
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    Icon14 Re: Cleaning Throttle body and IAC

    I just did my throttle body, and took about two hours! But also did the 60 mm smoothed out. Can't wait for the results.

  11. #11
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    Default Re: Cleaning Throttle body and IAC

    Wow my '94 Cherokee Sport has been having a small bit of rough idle even though the RPM's are around where they should be. Suppose mine are due for a cleaning since it's at 262,000 miles damn near. Great visuals and a great topic in general! Thanks for the post!

  12. #12
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    Default

    ^^^
    I used this write up as a guide to clean mine and it is the best! I did mine about 2 months ago but just wanted to thank you so much for posting this!


    Sent from my iPhone using Tapatalk
    Lovers leave you, friends forget you, but a Jeep is forever!!
    Instagram:archixj

  13. #13
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    Default Re: Cleaning Throttle body and IAC

    I did mine and it has better idle and response when driving. Cool, that was easy. I need another easy one!!! 195K

  14. #14
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    Default Re: Cleaning Throttle body and IAC

    Great post. Thank you for the how to. I did it yesterday and xj is running way better.

  15. #15
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    Question Re: Cleaning Throttle body and IAC

    Quote Originally Posted by XJMJeep View Post


    My 1988 Comanche Renix 4.0 has had a very low and rough idle for awhile now, then it started dieing at stoplights so time to clean!

    This is actually a very easy job to do and as long as you have a set of Torx bits (As a Jeep owner you do have a set... right?) it only costs the price of a can of carb cleaner.

    First, remove the breather tube.
    It's the black slinky looking thing.



    Next unhook the wiring, three plugs and done.
    Now remove the entire throttle body, three Torx bolts and it's off.



    Throttle body before.





    IAC before.





    I cleaned them with a tooth brush and carb cleaner, did a good job.

    Throttle body after.





    IAC after.





    Don't forget to clean where the IAC lives.



    After cleaning up everything, put it back together.





    Success!
    Love when a project works the way it should.
    The Comanche went from idling around 300 to 400 RPM and dieing to this!



    Well worth the hour or so it takes!

    Hey what is supose to be the idle rpm of a cherokee sport 1994 please if you can help me cuz, I did the same job clean the trotle body .

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