My Jeep is having RPM issues, struggling to stay at desired speed.
180

Asked by Iamaa7 Apr 28, 2012 at 03:07 PM about the 2000 Jeep Grand Cherokee Laredo

Question type: Maintenance & Repair

2000 Grand Cherokee Laredo 4.7 2WD. At about 45+, especially at 70mph, I notice that the RPMs drop once I'm trying to cruise at desired speed. I have to let off pedal and re apply for more acceleration otherwise it just accelerates slowly at the same RPM (about 2000-2500). The Jeep is overheating once this occurs from what I feel is the struggling/pushing to go faster at a lower RPM. Also sounds like it's engine breaking once I release the accelerator, slows faster than I feel it should. I was leaning towards transmission or maybe fuel injection or throttle cable. Put new TPS, new trans filter, new plugs. Anyone have an idea?

2 Answers
85

JoshandEmma answered 11 years ago

weired. i was gonna say TPS. you could maybe try the IAC sensor. (idle air control) sensor dont know if it is related or not, how does it do at idle?

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Zprchk answered 5 years ago

Crank sensor. My Roma drop to 00 and it stalls. Will start right up sometimes right after, sometimes not. Driving us crazy to figure it out but have been told by many that it's probably the crank sensor. We're changing mine!

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