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93 Festiva fuel problem, changed pump, relay and computer. Inertia switch isn't tripped. What next?

Tiny
BRONCBUSTER2
  • MEMBER
  • 1993 FORD FESTIVA
  • 10,000 MILES
No power to the new pump
changed relay and computer
what am I missing?
Sunday, January 22nd, 2012 AT 9:39 PM

11 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Have you actually checked for power and ground? Do you have power at relay? Does relay energize?
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Sunday, January 22nd, 2012 AT 10:24 PM
Tiny
BRONCBUSTER2
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  • 6 POSTS
No power to relay, only energizes with engine cranking
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Tuesday, January 24th, 2012 AT 10:49 PM
Tiny
FIXITMR
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So none of the socket pins have 12v with key on?
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Wednesday, January 25th, 2012 AT 5:14 AM
Tiny
BRONCBUSTER2
  • MEMBER
  • 6 POSTS
No none.
I ran a jumper to the relay and pump started running.
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Friday, January 27th, 2012 AT 12:24 AM
Tiny
HOMER1967
  • MECHANIC
  • 875 POSTS
Have you checked for a fuel pump fuse?
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Monday, January 30th, 2012 AT 12:22 AM
Tiny
BRONCBUSTER2
  • MEMBER
  • 6 POSTS
Have just about taken all of the wiring apart, haven't found a fuse as of yet
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Monday, January 30th, 2012 AT 10:28 PM
Tiny
HOMER1967
  • MECHANIC
  • 875 POSTS
The fuse, if there is one would be in the fuse box.
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Monday, January 30th, 2012 AT 11:42 PM
Tiny
BRONCBUSTER2
  • MEMBER
  • 6 POSTS
No fuse for the fuel system in the fuse block.
Am now investigating the main relay.
Still no power to the computer and fuel relay
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Tuesday, January 31st, 2012 AT 11:04 PM
Tiny
FIXITMR
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Looks like power originates at starter terminal. Maybe fusible link there?
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Wednesday, February 1st, 2012 AT 6:36 PM
Tiny
BRONCBUSTER2
  • MEMBER
  • 6 POSTS
Didn't find a fuseible link, only 2 wires at the starter.
Main relay is rusted really bad inside, as is the headlight relay.
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Friday, February 3rd, 2012 AT 12:45 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
[quote]only energizes with engine cranking[/quote]

If that is true, it's acting exactly the way it's supposed to. It only energizes for 2 seconds when the key is turned on and then shuts off until the computer sees cranking.
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Friday, February 3rd, 2012 AT 12:51 AM

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