7.3 No start
Thread Starter
|
Senior User
Joined: Nov 2010
Posts: 153
Likes: 0
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
Likes: 1
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.
Thread Starter
|
Senior User
Joined: Nov 2010
Posts: 153
Likes: 0
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
Posts: 5,470
Likes: 3
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).
Postmaster
Joined: Jan 2009
Posts: 4,006
Likes: 1
From: AL, Reform
Trending Topics
Post Fiend
Joined: May 2009
Posts: 5,470
Likes: 3
From: Pea Ridge, AR
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
