Hello everyone,
I am new to the site. I have read numerous threads close to my situation but nothing quite right so Id like to post my situation and see what I get. Thanks for the advice in advance. I have a 2002 f350 dually with a 7.3 and 197k. At 186k it died while driving and I had it towed home. As soon as the tow truck dropped it the truck fired right up like nothing was wrong. Then it died again 2 days later. I replaced the cps, but the fix was replacing the icp and pigtail. Now it is doing the same thing again. It died on my wife while driving yesterday, i had it towed to the dealership I work at and it started and ran for about 2 hours with no issues. I hooked up the factory IDS and had a diesel tech look at it with me. The oil pressure, injector circuit and injectors, and IPR all look good. The batteries were a little weak so i replaced both of them. I drove it home yesterday, about 10 miles, and drove it around town today. Then i tried to jump start my 96 bronco and after about 10 minutes of running it sort of hick uped then 5 minutes later it died and would not start. I let it set for 30 minutes and it started and died after about a minute. I am scratching my head on this one. I work at a ford dealer and am not the only one lost with this one. Any advise on what to replace or test would be great.

 

bump to the top, hope some other veteran 7.3 owners chime in with ideas.

 

Moved to the 7.3L forum.

 

The first thing that comes to mind is fuel delivery.How full/empty is the tank?

 

Was it an OEM CPS that you replaced it with? These trucks don't like aftermarket units.

With the fuel delivery part, if your tank was below about a quarter then it could be your foot has broken off in the tank. Another thing it could be is clogged in tank filters. This can be band aided by blowing some air bank into the tank by way of removing the inlet to the fuel pump.

Either way a hutch and harpoon may not be a bad idea.

Is the tinnerman nut on the IPR still?

Are there any more conditions that occur or are occurring when it cuts out?

 

Today I started the truck and it dies after running for about 5 minutes. As advised by someone on this forum I poured cold water on the ipr. The truck, uncharacteristically for the present situation, fired right back up. The ambient air temperature began to drop rapidly due to nightfall and the truck ran for about 2 hours even with me holding the throttle at 2000-2500 rpms. So I am going to try the same thing tomorrow morning once it warns up. So far it looks like the coil on the ipr is over heating and killing the truck.