Question about Jeep Grand Cherokee

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Jeep idles around 500 rpms before driven, after it is driven it idle again at 500 rpm's until it's put into park. in park it idles at about 1250 rpms

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  • nicholas2009 Jan 19, 2009

    my jeep is idlin really badly and misses sometimes and sounds like its goin to stall it has been put on the computer and says the tps has low voltage ???

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Check throttle position sensor

Posted on Oct 03, 2008

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My 04 Jeep GC is idling around 500rpm in Drive and Reverse. I had the IAC valve replaced after it was doing this about a month earlier, and it seemed to be the problem...until yesterday. The idling


it could be a new bad IAC motor...especially if its an aftermarket brand!! something like that even though the part is a little more expensive go with OEM jeep parts, especially electrical stuff.

Nov 15, 2013 | 1996 Jeep Grand Cherokee

1 Answer

After my 03 jeep liberty warms up to normal, the idle begins to fluctuate until it goes down to 500 rpms than wants to shut off but revs itself up to stay on, now when I am in park and rev the rpms up it...


It's not a gas pedal, it's an air pedal. Fuel injected engines are all about air flow at idle. take off the intake snorkel and check out your throttle body. You may just need a new throttle position sensor, or the Idle solenoid that regulates idle air flow is stuck. The computer will try to compensate, but it can only do so much.

Nov 04, 2013 | 2004 Jeep Liberty

1 Answer

2001 Taurus RPMs drop every 10 seconds in park after warm


Could be IAC sensor maybe TPS sensor[RPM].

Jun 14, 2013 | 2001 Ford Taurus

1 Answer

1994 SL1 Code 14 hard cold starts,and revs to about 2500 Rpms onstart then dies.


They make a connector for the sender unit and they have to usually be replaced. Watch which way it goes on since they are a little cumbersome plugging back on...I prefer soldering the new connectors on too.

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1 Answer

Start car and the idle goes to 3000 rpm, holds there for around 12 seconds or so and then comes down to around 1200. when driving if stopped and you put the car in park or nuetral the idle will go up to...


it sounds like a vacuum leak to me, my car had the same problem but when i changed the hose that connected the valve cover to the fuel injectors the rpms dropped back down to about 800 rpms

Sep 17, 2010 | 1999 Saturn SL

1 Answer

Integra revs RPMs when idling


idle air control motor or just a plain old vacuum leak

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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

1988 jeep cherokee idles rough, and will die while driving


Sounds like it could be a bad map sensor.
Black smoke?

Sep 16, 2008 | 1988 Jeep Cherokee

1 Answer

While Idleing, My RPMs gauge goes up and down and continues until my car turns off. I put it in Park and restart it and it is fine until I am Idling again.


I had this same problem but the high rpm and thermostat indicator rise together if it does i would look at engine coolant temperature sensor your thermostat could be bad as well

is the blower motor or does it sound like the fan comes on. Draining of the battery i would look for a light on if its not the blower motor.

Aug 06, 2008 | Mercury Sable Cars & Trucks

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