ZJ idling rough - JeepForum.com

 
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post #1 of 10 Old 06-03-2013, 06:46 PM Thread Starter
TKFlight
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1995 ZJ 
 
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ZJ idling rough

As the title states my jeep is idling rough when at a red light, etc, I'm assuming its nothing serious since my jeep drives fine. I was thinking maybe it was the throttle body needing to be cleaned. Any other info would be appreciated.

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post #2 of 10 Old 06-03-2013, 07:32 PM
picflight
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It could also be a fuel delivery system that's faulty.
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post #3 of 10 Old 06-03-2013, 10:01 PM
JasonStebbins
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Clean the throttle body and the IAC. It's a little spindle on the back of the throttle body held in by two torx bolts. Take it out and clean it, but don't push it in/out while you are cleaning it.

Report back.

Poop
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post #4 of 10 Old 06-03-2013, 10:07 PM Thread Starter
TKFlight
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Just need to go out and get throttle body cleaner now, and I'll check the IAC while I'm at it. Will report back when its done

1995 Jeep Grand Cherokee Laredo 4.0L
251K+ miles
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post #5 of 10 Old 06-03-2013, 10:10 PM
WhiteOut
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Quote:
Originally Posted by JasonStebbins View Post
Clean the throttle body and the IAC. It's a little spindle on the back of the throttle body held in by two torx bolts. Take it out and clean it, but don't push it in/out while you are cleaning it.

Report back.
This. It's a T25 torx
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post #6 of 10 Old 06-03-2013, 10:50 PM
Oldfrog
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After cleaning the throttle body and IAC, go ahead and pop the distr. cap open too. Clean and inspect it. Lift the plate inside ( cam sensor) and clean under it. Then pour a 1/3 can of Seafoam in your gas tank.

2007 5.7 Hemi, Ltd. QD II -
1997 ZJ, 4,0 select trac, Up country, track lok.
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post #7 of 10 Old 06-04-2013, 11:06 AM
L_Kilkenny
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Check your vacuum lines..............

I do it by spraying carb cleaner around every hose and fitting. You'll hear the change pretty quick when you hit the leak.
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post #8 of 10 Old 06-04-2013, 05:56 PM Thread Starter
TKFlight
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Thanks for the replies guys. I was doing some research on here and found out that there are no MAF sensors on Jeeps(laugh at me if you want)

http://www.jeepforum.com/forum/f310/maf-sensor-1084165/

I got a picture of my throttle body, and is the IAC the part to side with a power connector going to it?

http://i.imgur.com/e2AsiYK.jpg
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post #9 of 10 Old 06-04-2013, 07:36 PM
JasonStebbins
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The IAC is North in your picture. The sensor North East is the TPS. (Throttle Position Sensor)


Poop
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post #10 of 10 Old 06-04-2013, 11:05 PM
dnuccio
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1995 ZJ 
 
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my 5.2 was idling rough so i took the throttle body off, took off all the sensors, and cleaned it really well. also cleaned the IAC. runs much better and smoother

Reliability is relative
R.I.P. Ratmonkey
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