Question about 1999 Jeep Wrangler

1 Answer

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

Some times my jeeps rpms will rev up higher then normal for no reason when driving or just sitting there idle its a jeep wrangler sport 4.0 manual

Posted by on

  • Raymond Ramirez
    Raymond Ramirez May 11, 2010

    TPS (Throttle Position Sensor) or anti knock sensor. you can try using carbuerator cleaner in the air intake this might free it up. If you use cleaner make sure you spray around the edges of the inside wall. Let me know if this helps

×

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

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

  • davidthx138 Aug 12, 2009

    UPDATE: They now say it is the Throttle Position Sensor, $ 99 for the part alone, Hopefully this will fix the problem, I will let you know.

  • davidthx138 Apr 26, 2014

    UPDATE: Dealer never was able to fix the problem so I got rid of this vehicle. This has been the abxolute worst car I have ever owned. I had so many mechanical breakdowns I am amazed theat people still buy these Jeeps. I bought this Jeep new and had transmission, rear end and clutch problems from the get go. In addition there were the vacuum leaks, holes in the exhaust manifold, water leaks, most while under warranty.

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

High idle


What control idle is RPM sensor[TPS] to check it is OK.

Jan 28, 2013 | 1999 Pontiac Grand Prix

2 Answers

I have a 2002 Jeep I have a 2002 Jeep Grand Cherokee Laredo v-4. When I am idling at a light, my jeep has shut off about seven times. It starts right back up though. When I am idling and sometimes while...


I have replaced TPS - throttle position sensors on jeeps for this same problem ! Fixed them right up . But use jeep parts , not aftermarket ! Jeep's don't like aftermarket parts .

Jun 02, 2017 | 2002 Jeep Grand Cherokee

1 Answer

2003 Chevy Cavalier 2.2L - RPMs Surge & Drop Out - Stalls In Idle


it sounds like its drawing air into the inlet mannifold

Apr 16, 2010 | 2003 Chevrolet Cavalier

1 Answer

When my 2001 GMC Sierra pickup is idling, I press the gas pedal down all the way and the RPMs only go up to 3000. When I'm driving, it works fine. Any explanation for this?


This is a safety feature for the motor. It is called a rev limiter. This is meant to prevent the motor from reving at high rpms when at idle. This is completely normal

Mar 01, 2010 | 2001 GMC Sierra 1500HD

1 Answer

Integra revs RPMs when idling


idle air control motor or just a plain old vacuum leak

Jul 21, 2009 | 1992 Acura Integra Hatchback

1 Answer

2004 jeep grand cherokee idling problem. Revs motor 200 to 500 rpms higher while driving.


I had the exact same problem on my 04 GC. I put some Techron Concentrate Plus Fuel System Cleaner in from Wal-Mart and it seemed to fix the problems right away. Let me know.

May 31, 2009 | 2004 Jeep Grand Cherokee

1 Answer

Intermittent high revving!


Throttle position sensor.

Jun 25, 2008 | 1998 Ford Escort

1 Answer

Sitting at high idle


then u need togo sumwhere else

Jun 03, 2008 | 2001 Lincoln LS

Not finding what you are looking for?
1999 Jeep Wrangler Logo

1,038 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...