This is topic issue with a 89 5.0 in forum Tech Talk at Northern California Ford Owners  .


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Posted by 85staNg302 (Member # 9450) on :
 
i have a 89 fox im having an issue with ran perfect all of a sudden hesitated on the freeway and now car is idling like at 400, once u throttle it it wants to die out or dies completly ...also i can full throttle it and it revs like at 500 no more ..i did the fuel pump thinking it was it cause it had low voltage. wasnt it..id appreciate the help thanks
 

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Posted by Wht86drop (Member # 12104) on :
 
Does it still get low voltage? If it does it could be the relay
 

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Posted by NK2186 (Member # 12319) on :
 
check the valve on the fuel rail and see if you have pressure at the rail. If not check your fuel filter and make sure its clean.

If that is not it check for major vacuum leaks. Have you done any work on it recently? replaced any gaskets or anything?
 

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