How To Clean Throttle Body and Idle Air Control Valve - Jeep Wrangler - YJ

How to remove and clean the throttle body and Idle Air Control Valve on a 4.0 Jeep Engine.

[@beboboymann3823]

Good job. You have a great narrative style. Relaxed and detail focused.

[@bward5725]

Great Video, Just got done taking off the throttle body and cleaning. It was a mess. FYI, you can put the idle air control in backwards and the plug will not go on because it hits the oxygen sensor . Lesson learned. Had to take the TB back off and rotate the IAC valve 180 degrees. Now the old 2.5 is idling smooth. Gas mileage should improve as well.

[@CHUBBYRAINTHEFIRST]

Thank You for pointing out zeroing the trans with that cable

[@jodymcleod4636]

Is that my spotted shirt you are using to clean that throttle body? Hahaha! thanks for the video!

[@jasongee9118]

2 great videos in a row of yours i have watched. I subscribed.

[@christiroseify]

Great video!! I have a "Junkyard Gem" of a 1990 Cherokee 4.0 that I am working on and this is in the top 2 things I need to do next. Valve cover gasket first though..

[@ftera4]

Excellent video, thank you. Was able to clean my throttle body and idle air control valve with your instructional video.

[@run2thefight]

Thanks for the video. What’s the torque specs for the TB

[@klb1956]

Thank you for the video. I changed mine and made a difference not only in stabilizing idle, but response as well. One thing I didn't see you mention that I thought might be worth mentioning. Chances are after you change or clean your IAC valve, you ECM will have to re calibrate. It will most likely run at high rpm. From the directions that came with my new one, said to drive at 40 mph and at engine temp. It will calibrate to the pre-set ECM settings. Thanks again!

[@HEAPofJEEP1]

Yup, good point. Depending on what year engine you're driving, it could seem like an extraordinarily long time for it to learn, and you might start second guessing everything you just did. But you are correct. Let it re-calibrate everything and you'll see the improvement.

[@neilsilbermann4951]

I also need a fan for the radiator l know they are xpensiv

[@midwestmutineer7675]

THANK YOU for this video! You just saved me $350!!

[@Tablesaw818]

Another great video. Thanks Jason!

[@satanssonbob]

Have a 2011 did this yesterday. Goddamn how was mine dirtier than one from the 90s? Lol good videos cheers

[@rachealrock857]

Love this video haha.. So animated! Since 1995 haha same I'm about to do mine from 99

[@goodgreenmen2126]

Nice break down.

[@bushpilot223]

I need to do this on my 87 2.5L YJ… but it’s throttle body injected and I have fuel lines and all sorts of crap running to the TB. Trying to figure out how to correctly disconnect everything but I’m having trouble finding any info online

[@idahospyder1620]

How did it run afterwards?

[@rachealrock3638]

What about a new gasket? Do you scrape the old off with a razor or flathead?

[@matthewpolo227]

APPROX HOW MANY RPM'S DID IT FLUCTUATE PRIOR TO CLEANING AND WHAT DID IT IDLE AT WHEN FINISHED ?THANKS

[@mariofuenzalida8601]

very good question , no answer yet

[@richgorsuch2667]

Thank you sir!

[@NoWr2Run]

First thing is clean the inside of T. B. while the jeep is running, spray it in there, you won't have such a mess when you take it off. Your I.A.C. valve can be rocked back & forth while pushing in with your thumb after it's clean, it will reset itself. Always use a lubricant on the o-ring on the I.A.C. when installing. I would also use new T.B. gasket like you did, their like 2 bucks as you said. I always lubricate the stem for the butterfly & the cables, they have nylon bushings in there. Also if you have an air compressor it's GREAT TO BLOW IT ALL OUT WHILE CLEANING.

[@neilsilbermann4951]

Need part number for 93 Jeep

[@NoWr2Run]

@@neilsilbermann4951 Part number for what ?

[@MrDfromjersey]

Thanks for the vid brother my is stalking out after idle too long at red lights/traffic jams/drive thrus giving this a go to see if it lll stop the stalling.

[@Northern_shenanigans_Mi]

Did it help?

[@WitchyCharlie]

Was this the issue??

[@WAEMIDIV]

Do I need to specifically use Throttle Body Cleaner or can I just douse it with brake cleaner?

[@revolutionday1]

DO NOT use brake cleaner on these parts!!

[@jat-justamaturetech-philpj8285]

Other videos say to disconnect the battery?

[@HEAPofJEEP1]

If it makes you more comfortable, than do it.

[@mikemaybe5999]

Chicken

[@rudybishop9089]

Good stuff

[@neilsilbermann4951]

Idea air control valve sorry

[@james6275]

Dood helpful, but man get a new throttle body from rock auto mine was like yours it was a total mess

[@SeriouslyAwesome]

That’s the worst looking throttle body and IAC I’ve ever seen. Holy cow

[@mikemaybe5999]

My iac was horrible lol

[@diegocamacho4841]

My 89 wrangler was worse