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1988 Chevy 454 1 ton truck wont run


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91Fbird
Novice
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Jan 19, 2009, 8:50 PM

Post #1 of 6 (4417 views)
1988 Chevy 454 1 ton truck wont run Sign In

 Was driving home and the truck just stopped running it turns over and I get a spark tried pouring gas in the motor and it fired up and died, Checked all fuses and didnt find a problem but when I used a test light on the wire to the fuel pump I wasn't gettin any juice. I was hopin to be able to find a wiring diagram but aint had any luck. Any suggestions?


Tom Greenleaf
Ultimate Carjunky / Moderator
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Jan 19, 2009, 9:46 PM

Post #2 of 6 (4408 views)
Re: 1988 Chevy 454 1 ton truck wont run Sign In

?? There's a relay listed for the pump which should look like this,



Give it whack - bet it kicks to - then toss it for a new one if so,

T



91Fbird
Novice
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Jan 20, 2009, 9:44 AM

Post #3 of 6 (4403 views)
Re: 1988 Chevy 454 1 ton truck wont run Sign In

I replaced that and it still does not solve the problem, any other suggestions?


Tom Greenleaf
Ultimate Carjunky / Moderator
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Jan 20, 2009, 9:49 AM

Post #4 of 6 (4398 views)
Re: 1988 Chevy 454 1 ton truck wont run Sign In

I don't have a diagram but would follow the path of power to the fuel pump to see where the break is. Connectors wherever found are trouble spots.

Even the block at firewall to fuse box on inside can make a disconnect unseen in there,

T

To add another maybe - the oil pressure if giving a false reading might be at fault?? Some might be able to disable fuel pump - just not sure with this vehicle exactly



(This post was edited by Tom Greenleaf on Jan 20, 2009, 9:51 AM)


91Fbird
Novice
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Jan 21, 2009, 9:07 AM

Post #5 of 6 (4384 views)
Re: 1988 Chevy 454 1 ton truck wont run Sign In

Its not the oil pressure but I'm having trouble tracing the wires back but will keep on trying if anybody has a wiring diagram please let me know


Double J
Veteran / Moderator
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Jan 22, 2009, 2:02 PM

Post #6 of 6 (4356 views)
Re: 1988 Chevy 454 1 ton truck wont run Sign In

Here is what i have..........








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