HELP wont start

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Mar 23, 2008 | 03:27 PM

peterbilt379exhd

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HELP wont start

96 F250 PSD. When I turn the key, WTS light doesnt come on and OD light does. I opened the cover by the fuel filter, the "solenoid"?, round thing to the left of the fuel filter...the large bolt in the back is melted. I removed the small bolt and wire in the front and by running a wire to the big melted bolt in the rear, from the battery, was able to start the tuck....WTS light comes on fine, OD light goes off. Any ideas? Thanks.

Mar 23, 2008 | 04:47 PM

79f-250custom

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From: Wisconsin

you need yourself a new GPR im going to guess.
GPR- glow plug relay about 30-50bux.
also check for blown fuses now.
Mitch

Mar 23, 2008 | 05:11 PM

WALJON

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From: THUNDER BAY

There is more of a problem there if the wire and post is melted check the entire glow plug system you have some resistance somewhere not allowing the power to get where it is supposed to go. just changing the relay isn,t going to fix your problem

Mar 23, 2008 | 06:34 PM

79f-250custom

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From: Wisconsin

well it may have stuck open"on the on position" and melted the post off. and since he was able to start the truck i think he will be ok. still not a bad idea to check the UVCH to see if any pins have melted or what not?
UVCH? is that the right abv? under valve cover harness?
Mitch

Mar 24, 2008 | 07:37 AM

peterbilt379exhd

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Yes, I suspect there is more of a problem than just the relay. Is there any way, the glow plug system could affect the injectors because without the wire running off the battery, the truck will on crank, but it wont start.

Mar 24, 2008 | 03:09 PM

powerstrokeddiesel

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From: whitesburg ky.

it should start when warm... without the wire going to the wire that melted off of the gpr...

Mar 24, 2008 | 03:32 PM

Cuda_jim

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From: MICHIGAN

Quote:

Originally Posted by peterbilt379exhd

The GPR can and does do that after a few years of use (abuse) or if it was previuosly replaced with a cheap GPR (starter solenoid ect).

BE sure to get a good GPR and not a starter solenoid...
or a stancor solenoid like this one,
http://guzzle.rbmicro.com/s_gpr.html
this GPR that will lkely outlast the truck

If oyu plug in the block heater or keep the truck in a warm building it will start without the aid of the GP's. The GPR system does not affect the injector directly but share a common connector going under the valve cover. If the GP's aren't heated up properly the engine will just spin and spin with no fire.