1993 Ford Bronco Need some answers

Tiny
93 FORD BRONCO
  • MEMBER
  • 1993 FORD BRONCO
  • V8
  • 4WD
  • AUTOMATIC
  • 175,000 MILES
1993 Ford Bronco Just installed new ford fuel pump and filter 2 months ago and has worked great till today. After 15 min to a hr. Of running it will just die. Fuel pres. Goes to 0 Let sit for awhile and it starts again 4o psi while running. When it dies u can't hear fuel pump turning on. Seems like relay (fuel) clicks once. When u can hear pump it starts. HELP
Thursday, April 16th, 2009 AT 11:43 PM

5 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
I suggest swapping out fuel pump relay with a known good relay. Let me know if that solves the problem.

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Friday, April 17th, 2009 AT 2:39 AM
Tiny
93 FORD BRONCO
  • MEMBER
  • 3 POSTS
I replaced the fuel pump relay this morning and low and behold it died again after about and hr after running
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Friday, April 17th, 2009 AT 7:47 PM
Tiny
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  • MECHANIC
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Okay. Is there any anti-theft devices on your vehicle?

Inspect the wiring harness connectors to the fuel pump as well as the relay.
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Friday, April 17th, 2009 AT 8:09 PM
Tiny
93 FORD BRONCO
  • MEMBER
  • 3 POSTS
No there is no theft alarm that I am aware of. At least since 2004 that I know of. I did recheck wiring harness to the fuel pump. Jiggled wiring harness while running, no change. I'm wandering if module of some sort?
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Saturday, April 18th, 2009 AT 3:11 AM
Tiny
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  • MECHANIC
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A temp sensor could cause the problem, but usually the vehicle will run, just very poorly.
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Saturday, April 18th, 2009 AT 2:40 PM

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