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Old May 16th, 2012, 12:12 PM   #1
72cj304
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1990 mustang gt high idle when hot start the car it idles at about 700 rpm drive it come to a stop it idles at 1300 for a few seconds then down to 100 then back up to 1300 I have replaced the air intake temp sensor the coolant temp sensor the egr sensor both o2 sensors and the air bypass no vac leaks and no codes thanks for any help
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Old May 16th, 2012, 12:22 PM   #2
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What about IAC sensor?
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Old May 19th, 2012, 06:55 AM   #3
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Clean the throttle body, disconnect the battery cable for 5 min. to reset the PCM. Should clear it up.
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Old May 19th, 2012, 10:15 AM   #4
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Tps?
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