Q: Fast idle and won't restart after the engine is warm.

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I have a high idle and after its hot it wont restart. After the first high idle issue I replaces the TPS and it was fine for a bout 20 miles. I get a 15 or a 51 code. I replace the coil about 2600 miles ago after i put tires on it when it would not restart for the mechanic per the his advice. this van ran a 2600 mile road trip for me and i love it but i need to take in on another but it is killing me. I have built most and repaired all y own cars but this ford in killing me.

My car has 120000 miles.
My car has an automatic transmission.

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