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wont idle right

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Old 11-17-2012, 07:26 AM
jw07 jw07 is offline
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wont idle right

i have a 1990 f 250 5.0 it runs good down the road but when you stop its idled up a little and when you put it in park it will idle up and down i have changed these parts 02 sensor idle air con. valve TPS and computer no change i need help please. THANKS
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Old 11-17-2012, 07:34 AM
jw07 jw07 is offline
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i need help
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Old 11-18-2012, 09:53 AM
dongill dongill is offline
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1).chech for vaccuum leaks,bad or disconnected hoses,or a small propane torch gas on no flame with engine running go around vaccuum ports and throttle body if engine idles down you have a vaccuum leak.2)could be bad idle speed contol sensor.
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