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I have a 2002 Jeep Liberty with 124,000 miles on it. It

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I have a 2002 Jeep...
I have a 2002 Jeep Liberty with 124,000 miles on it. It stalls when I come to a stop after driving about 25 miles. I was wondering if anyone knew what may be wrong with it. I know my speed sensor went and after that went I have been having problems. If anyone can help me or tell me where I should start please let me know.
Submitted: 10 years ago.Category: Car
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Answered in 5 minutes by:
4/10/2008
Auto Mechanic: OnlineHelp, Mechanic replied 10 years ago
OnlineHelp
OnlineHelp, Mechanic
Category: Car
Satisfied Customers: 3,423
Experience: Mechanic
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There are a couple of things you should check prior to replacing any parts.

1) Make sure the throttle body is clean. Make sure it closes all the way shut (if foot is not on gas throttle body should be closed all the way.)

2) Inspect the throttle body cable. The cable should not be obstructed by any other parts.

3) Inspect for vacuum leaks

  • Turn on car and open hood.
  • Get a can of Carburator cleaner. Spray carburator cleaner around the intake manifold gasket and throttle body gasekt. The engine operation should not change (RPM should not go up or down) if it changes then you need to replace that gasket.

4) Change your Idle Air Control Valve. This valve is what actually operates the idle (RPM's) in your car. When you take the foot of the gas, this part allows air in to keep the car running. If this part is clogged/dirty/bad connection/ broken you will have a stall at stops.

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