snowaddict91
Adventurer
I would tell the dealer to start with the cps. They can do all sorts of weird **** when they are bad. Fairly cheap and easy peasy to swap out.
Ford 7.3L Diesel Question
- Thread starter pete.wilson
- Start date
pugslyyy
Expedition Vehicle Engineer Guy
I don't think this is what you are seeing, but the fuel warmer for the fuel filter is a notorious problem on the 7.3PSD... but usually they short and blow the fuse = no start. Since the fuel filter sits on top of the motor the block heater keeps everything warm enough for the fuel heater to not kick on. Our shop F-250 with a 7.3PSD has over 400k on it and still runs great (here in NC we just have the fuel warmer unplugged, and will fix it next time we have to do a fuel filter change)
Martyn
Supporting Sponsor, Overland Certified OC0018
Pete, ask for the codes so we can find out what's going on and offer sound advice.
It does sound like a glow plug problem. Ford would have installed new plugs but the dealer may have installed them using the original harness. The harnesses are prone to getting brittle and the wires cracking, ask if they installed two new harnesses when they installed the rebuilt engine. If not have them test both harnesses or replace both harnesses. Many people replace the harnesses when they put new glow plugs in to avoid this problem.
It doesn't sound like a Cam Position Sensor, they just fail and the engine dies. They are very easy to replace and inexpensive too, easier to replace than test. Once you get the vehicle going carry a spare in your glove compartment.
It does sound like a glow plug problem. Ford would have installed new plugs but the dealer may have installed them using the original harness. The harnesses are prone to getting brittle and the wires cracking, ask if they installed two new harnesses when they installed the rebuilt engine. If not have them test both harnesses or replace both harnesses. Many people replace the harnesses when they put new glow plugs in to avoid this problem.
It doesn't sound like a Cam Position Sensor, they just fail and the engine dies. They are very easy to replace and inexpensive too, easier to replace than test. Once you get the vehicle going carry a spare in your glove compartment.
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legendaryandrew
Adventurer
I'll quote the guy that quoted me, for effect
Bbasso
Expedition goofball
Woofwagon
Adventurer
Yeah I think so, they came from Navistar as a drive by wire system. I don't recall any linkages on my friend's '96.
Woofwagon
Adventurer
+1
ujoint
Supporting Sponsor
Need those codes but yes, easy to ck the IDM for water. take it out and shake. 7.3s can be tough to diagnose sometimes!
arveetek
Adventurer
Yes, all 7.3L Powerstroke diesels were completely computer controlled with no accelerator cables. This engine debuted midway through the 1994 model year as a drive-by-wire system, meaning there is no accelerator cable and no mechanical connection between the accelerator pedal and the engine. I had to replace the electronic accelerator pedal on my 1995 7.3L diesel myself.
The older 7.3L IDI diesels used an accelerator cable and MFI.
I'm not sure what the parts listing you've provided indicates, other than the fact that Navistar makes accelerator cables. Navistar made lots of engines, not only the 7.3L Powerstroke. Those accelerator cables must be for a different engine.
Just for giggles, here's a breakdown for when drive-by-wire was introduced in the Big Three's diesels
GM - 1994 on the 6.5L turbodiesel
FORD - 1994.5 on the 7.3L Powerstroke
DODGE - 1998.5 on the 5.9L Cummins
Casey
BajaSurfRig
Well-known member
Vandy can you send me the "7.3 bible" I am new to these motors and want to learn everything there is to know about them. I have a 97 f350 PSD. My emails is m.sawyer528@gmail.com
Thanks,
Matt
Thanks,
Matt