Mechanics

HESTITATING FROM START TO 30M

2002 Jeep Grand Cherokee

Engine Performance problem
2002 Jeep Grand Cherokee 6 cyl Four Wheel Drive Automatic 56400 miles

Problem started after having been into the shop where they replaced spark plugs, and flushed transmission.
When I am at a stop/ standstill.(Usually my first trip out driving the Jeep and driven a few miles) I press on the gas pedal to start driving again and it doesn't accelerate. It hesitates. And the acceleration from 20-30mph is very slow. Doesn't always happen but more than not on the first trip out. Once I am past 30mph it acts normal, no hesitation. I notice the tackometer stays at 100 when it is hesitating and at or near 210 when it is accelerating normal Please answer, this is happening more and more! Thanks
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Jgc2002
October 22, 2010.




Could be the transmission is slipping if not check and test the manifold absolute pressure and throttle position sensors-to include the fuel pressure

Rasmataz
Oct 22, 2010.


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