Today, I started the ol' KJ that sat since last week's trip to the PA Jeep show. Started it up and the thing sat at just over 3 grand, didn't slow down. Shut it off, started it again same thing. Three times it happen. It is a good thing that I am not one of those start to drive guys, I would have went through the rear of the garage!!!! It did not pull a code.

Problem:

Very dirty valve body. Also has the reverse the KJ will shut down with a dirty vave body.

Fix:

Cleaned valve body with lint free rag, spray carb cleaner, and took out the lower sensor from valve body and that was all dirty.


This has been a problem with the Grands, the first time I heard of this in the KJ.

So guys, next time you change the oil, clean the valve body to be safe.

Al

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One Ruby, One Grand Cherokee, One YJ, One disassembled CJ, one Chevy Mason dump, one hotrod IH Pick-up, couple of antique tractors.
Former owner of a 5.5 inch lifted KJ

That WAS NOT the reason for your problem...















Your KJ is afraid of HEIGHTS

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Founder of L.O.S.T.
2006 CRD Sport
Mods: GDE Hot Tune w/ 364#@2000rpm/Air Box /3" Str8 Exhaust/ASFIR Alum Skids/245-75R-16 Cooper STT PRO/OME LIFT w/Clevis & 4 Spring Isos/AirTabs/Rigid 10" S2 LED/4xGuard Ctr Matrix Bumper
Drag Strip:Reac=.1078_60ft=2.224_1/8=10.39@64.8mph_1/4+16.46@80.8mph

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Early '02 Limited, Steel Blue, White Guts

What "high flow" air filter are you running?

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99 TJ
71 C101
04 KJ
03 SFA KJ Sport
LOST JEEPS So-Cal

Valve Body ? Of the transmission ? ? ?

I am certain he means throttle body.

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#074642

yes the thottle body....brain fart! The high flow ifilter s one of those import cones. I keep it clean and oiled, but it may be letting dirt in. I guess I will need to stop being cheap and get a good filter. I have also noticed with 85K on the ol KJ there is some oil blow by (Tell tale sign of the rings or valve seals going) but I don't burn oil nor do I lose any. I don't add any during the 3K oil change interval. Its just the nature of the beast I suppose. The oil beather is piped right into the thottle bodyon my 2002, so I think this helping a little.

Al

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One Ruby, One Grand Cherokee, One YJ, One disassembled CJ, one Chevy Mason dump, one hotrod IH Pick-up, couple of antique tractors.
Former owner of a 5.5 inch lifted KJ