Question about 2000 Ford Contour

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I have a 2000 Ford Contour. The check engine light came on. So I took it for repair. The mechanic hooked it to the computer and said it was the two oxgen sensors. So he replaced them So I went to pickup the car and the check engine light was out. But within about 2-3 minutes came back on. So I took it back to the shop and he said that his computer is not showing any faults. So can you help please?

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Disconnect the battery for 15 minutes. The computer just may need to be reset. If it comes back on, it should store a code for you.

Posted on Mar 22, 2011


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Is the service engine soon light on? I would suspect, based on your description, the TPS sensor may be open or the temperature sensor may have failed.
When you open the throttle the TPS sends the accelerator pedal information to the engine controller so the engine controller can add fuel and allow you to accelerate. If the TPS does not send the correct throttle position to the engine controller, no fuel is added and the engine stalls.
If the coolant sensor has failed, your fuel mixture will not be correct and engine can stall when accelerating.
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