7.3 No start
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Joined: Nov 2010
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From: Spencer, ma
7.3 No start
Hey guys, I have a 02 7.3 f450 that will not start, Ive read allot of the topics before I looked at it.. Here is what i have done so far.
1. thought it might be the fuel heater fuse, well the 02 has a different fuse panel than mine so I pulled each fuse to visually check them. All looked fine.
2. thought voltage was to low, jumped with another diesel to both batteries and added two jump packs (plenty of power there)
3. Thought it might not be getting any fuel, dumped the fuel bowl valve and no fuel... So I left it open and cranked it and it dumped a ton..
4. thought it might be CPS, so I ran over to Ford and got a new one and installed it.. No dice
I can get it to start and run off on either though so I would guess some how its not getting fuel??? as soon as I stop spraying the either it will die.. I did notice while cranking that the tach was not moving..
again its a f450 with no under the hood fuses, all are in the passenger cabin. thanks!
1. thought it might be the fuel heater fuse, well the 02 has a different fuse panel than mine so I pulled each fuse to visually check them. All looked fine.
2. thought voltage was to low, jumped with another diesel to both batteries and added two jump packs (plenty of power there)
3. Thought it might not be getting any fuel, dumped the fuel bowl valve and no fuel... So I left it open and cranked it and it dumped a ton..
4. thought it might be CPS, so I ran over to Ford and got a new one and installed it.. No dice
I can get it to start and run off on either though so I would guess some how its not getting fuel??? as soon as I stop spraying the either it will die.. I did notice while cranking that the tach was not moving..
again its a f450 with no under the hood fuses, all are in the passenger cabin. thanks!
Postmaster
Joined: Jan 2009
Posts: 4,006
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From: AL, Reform
first i dont like either in a diesel can blow up the gp.
sounds like the injectors are not firing because the rpm is not getting a reading. i would check the wire to the cps and the plug end. the pcm may not be getting a signal from the cps and wont start the truck.
sounds like the injectors are not firing because the rpm is not getting a reading. i would check the wire to the cps and the plug end. the pcm may not be getting a signal from the cps and wont start the truck.
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From: Spencer, ma
I did not check in the reservoir, but I did pull the dipstick to make sure that there was oil.
How does the oil not get up there? also the nut on the IPR.. My 7.3 lost its nut (LOL) and everything seems to work ok.. what does the nut do because now that this is mentioned im sure mine will malfunction..
How does the oil not get up there? also the nut on the IPR.. My 7.3 lost its nut (LOL) and everything seems to work ok.. what does the nut do because now that this is mentioned im sure mine will malfunction..
Post Fiend
Joined: May 2009
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From: Pea Ridge, AR
The nut is what holds the electrical coil in place on the IPR to properly activate the IPR.
If you were not getting oil into the HPOP reservoir, you could possibly have a failed LPOP(Low Pressure Oil Pump).
If you were not getting oil into the HPOP reservoir, you could possibly have a failed LPOP(Low Pressure Oil Pump).
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From: AL, Reform
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