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Posted on Mar 10, 2009
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Car misses at idle speed

As i was driving my 99 jeep grand cherokee 4.0 on the expressway about to accelerate to change lanes the car would not take off. I would step on the accelerator and it would not go faster. After I slowed down the car was working fine, but it happens on and off.

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  • Posted on Sep 30, 2012
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Tps sensor tps sensor tps sensor

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  • Posted on May 24, 2012
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Has anyone answered you yet on this?

  • Anonymous Oct 01, 2012

    I fixed it myself. After I pulled the fuel pump out I had found that one of the rubber hoses had somehow come loose from the metal line it should have been clamped too. After pushing the rubber hose back on the line and re-clamping it the vehicle runs great. Always the small simple things!

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  • Posted on Mar 10, 2009
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Replace fuel pump inside tank

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Related Questions:

1helpful
5answers

I've got a 1996 jeep grand Cherokee with the 5.2 v8 fuel injected Holley throttle body. My problem is while driving at soft or low acceleration it accelerates fine, but if you hit the throttle hard it
I would check the voltage on the throttle portion sensor with the engine off from idle to wide open throttle.If there are any dead spots, replace the sensor. If the tps checks out, you should check fuel pressure. If you have good fuel pressure, you may want to make sure there isn't a lot of slack in your timing chain. I don't believe you mentioned the mileage of your vehicle. Best of luck.

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Multi-Di@g Access
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1999 Jeep Grand Cherokee has poor acceleration
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You can't answer that kind of question. Have to have the vehicle,know the systems and follow a diagnostic tree to find the problem.
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Apr 30, 2010 • 1999 Jeep Grand Cherokee
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Have a 1997 Jeep Grand Cherokee 2.5 Diesel. Idles
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Feb 09, 2010 • 1997 Jeep Grand Cherokee
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99 Jeep Grand...Idle up and down and now a check engine light
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Jul 07, 2009 • 1999 Jeep Grand Cherokee
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1999 jeep grand cherokee will not shift into over drive.
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Apr 05, 2009 • 1999 Jeep Grand Cherokee
1helpful
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1999 Jeep Grand Cherokee Problem
Idle prolem could be a dirty throttle body or sticky air idle control motor.
If the Jeep is a 6 cly. the adjustment for the belt is the power steering pump.
If the Jeep is an 8 cyl. the tensioner is on the pass. side of car.
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Oct 17, 2008 • 1999 Jeep Grand Cherokee
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I've got a 1996 jeep grand Cherokee with the 5.2 v8 fuel injected Holley throttle body. My problem is while driving at soft or low acceleration it accelerates fine, but if you hit the throttle hard it

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