1990 tbird fuel pump runs all the time

debbieg69
25

Asked by debbieg69 Feb 05, 2014 at 02:04 PM about the 1990 Ford Thunderbird SC

Question type: Maintenance & Repair

3.8 engine

9 Answers

Tom Demyan
83,585

Check the fuel pump relay.

debbieg69
25

I reseet the relay inside of trunk and fuel cut off button it worked for a little bit then went back to running even when engine is off. How do I reset the brain on this car

Tom Demyan
83,585

The relay might be faulty, did you test it? Try replacing. TO clear the memory , disconnect the negative battery cable for 20mins and reconnect.

debbieg69
25

Not sure how to test it. I'm ready for a stick of dynomite and a match...lol

Tom Demyan
83,585

I'd just replace the relay, about $15.

debbieg69
25

Thanks Tom ur answers have been helpful better than from others. Gonna try this. Keep ur fingers crossed.

John Brown
55

tom is right but also check for a short or grounding (broken wire casing)

tuff4x4
8,605

Yes relay is bad

debbieg69
25

Well just found out its not a sc model engine so now where would the relay be located. Is it still in the trunk

Your Answer

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