Question about 1998 Jeep Wrangler

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How do i fix my high idle problem on jeep wrangler

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  • 26 Answers

Vacuum leak, get a can of carb cleaner and give it a quick spray into throttle body you will notice a change in the rpms. then spray it around the outside of the throttle body and on the vacuum hoses, if the RPMs drop again that is where the leak is.

Posted on Dec 09, 2014

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A quick fix is to look under the hood, look for where the intake meets the throttle body, you will see a bolt which can be adjusted. When you start to screw it out, your idle will decrease...

Posted on Apr 25, 2010

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Posted on Jan 02, 2017

bunnydawg
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SOURCE: 1999 jeep wrangler heater blower

you need to change the resister block for the fan. it is located on the heater duct near the fan... there is a connector on it and two or three screws holding it in.

Robert

Please take a moment to rate this solution thanks

Posted on Feb 21, 2009

  • 1 Answer

SOURCE: will idle high sometimes up to 3000 rpms when driving or sitting still

I have the same Jeep and same problem. The engine was running rough. The Jeep dealer fixed a vacum problem in the manifold and they then decarbonized and cleaned the fuel injectors. After these repairs the idle problem began, it would spike to 2000 rpm while sitting at idle, sometimes it would slowly come down, sometimes I would have to tap the accelerator. I took it back in and they then replaced the throttle motor and reprogrammed the PCM (Power Control Module?) Still same problem. Now they suspect a another vacuum leak and I am taking it back in on Tuesday, will let you know what happens, $ 1,300 so far.

Posted on Aug 08, 2009

bigc73542
  • 108 Answers

SOURCE: Jeep Wrangler 6 cyl. idles up and down

Have your oxygen sensor checked, one of the symptoms of a faulty oxygen is an up and down idle.

Posted on May 04, 2009

  • 169 Answers

SOURCE: 91 Jeep wrangler New everything idles rough, no Power then dies

you check for miss how is compression

Posted on Aug 29, 2009

  • 3 Answers

SOURCE: i have a 1988 jeep wrangler that won't idle.

1. check for vaccuum leaks.
2. check for a check engine code
3. check the throttle body/butterfly plate for carbon build up.

Posted on Sep 09, 2009

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1 Answer

97 jeep wrangler


vacum leak on manifold or idle control stuck,you may need to read ECU codes with a scan tool

Jun 29, 2014 | 1997 Jeep Wrangler

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How do you turn down the idle on 2002 wrangler?


The idle speed is automatically controlled and has not adjustment that can be made. If the idle is to high you have a problem, most likely a vacuum leak from a intake gasket or a disconnected vacuum hose, this extra air causes the engine to run faster.

Jan 13, 2011 | 2002 Jeep Wrangler

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Idles high


Idle speed is not related to the clutch position. With the pedal depressed, the engine is freewheeling and is not engaged with the remainder of the driveline. Likely the idle speed is the same with the engine running in neutral or with the clutch depressed. check the idle air control and clean the throttle plate in the throttle body as well as checking the throttle cable for binding etc. If there is a small vacuum leak, that also can raise idle speed.

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Jeep idles high always wants to just go. When in park idles really high. put new tbi checked vaccum hoses seem to be fine


U have a huge vacuum leak somewere spray carb cleaner around the intake system. Double check to make sure no vacuum lines came off.

Oct 18, 2009 | 2002 Jeep Wrangler

2 Answers

99 Jeep Wrangler


check the idle speed sensor also the map sensor

Jul 31, 2009 | 1992 Jeep Wrangler

1 Answer

Will idle high sometimes up to 3000 rpms when driving or sitting still


I have the same Jeep and same problem. The engine was running rough. The Jeep dealer fixed a vacum problem in the manifold and they then decarbonized and cleaned the fuel injectors. After these repairs the idle problem began, it would spike to 2000 rpm while sitting at idle, sometimes it would slowly come down, sometimes I would have to tap the accelerator. I took it back in and they then replaced the throttle motor and reprogrammed the PCM (Power Control Module?) Still same problem. Now they suspect a another vacuum leak and I am taking it back in on Tuesday, will let you know what happens, $ 1,300 so far.

Jun 02, 2009 | 1999 Jeep Wrangler

1 Answer

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I have the same problem.... now it's getting worse and idling higher....If you find out the answer please email me at puffeugene@yahoo.com... thanks

May 25, 2009 | 1994 Jeep Wrangler

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check maf and tps sensor

Feb 18, 2009 | 1988 Jeep Wrangler

1 Answer

'99 Wrangler idles funny


im no expert but check idle control valve

Oct 24, 2008 | 1999 Jeep Wrangler

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