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I have a 2002 jeep wrangler 4.0 six cyl.my problem is;when

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at idle in neutral(5 spd.std),the...
I have a 2002 jeep wrangler 4.0 six cyl.my problem is;when at idle in neutral(5 spd.std),the engine accelerates and decelerates periodically without my foot on the pedal,like theres a ghost stepping on the gas.what could my problem be?
Submitted: 1 year ago.Category: Jeep
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Answered in 1 minute by:
6/23/2016
Jeep Mechanic: Dan, Technician replied 1 year ago
Dan
Dan, Technician
Category: Jeep
Satisfied Customers: 24,974
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Hello, my name is***** the check engine light on? Has anything been replaced yet? Thanks.

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Customer reply replied 1 year ago
check engine light goes on and off,nothing has been replaced yet.has 140,000 on engine.i am decent mechanic,but not savvy to the technical details involved.had 4 vehicles with this engine,never ran into this problem.
Jeep Mechanic: Dan, Technician replied 1 year ago

Do you know what diagnostic codes you are getting on Jeep? Is check engine light on right now? Thanks.

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Customer reply replied 1 year ago
last time i drve it,yes.I have no diagnostic reader to know the codes,that is why i came to you.jut wanted to know any possible reasons.am willing to replace any parts needed.
Jeep Mechanic: Dan, Technician replied 1 year ago

Based off symptom it sounds like a problem with the throttle position sensor but lets check codes before replacing anything. Next time light comes on you can turn key on-off-on-off-on within 5 seconds and code should be displayed on odometer. Let me know how it goes or if you have more questions, thanks.

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Dan
Dan
Dan, Technician
Category: Jeep
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