[moteinsun]

Drives around town fine, anything over 50-60 mph for any length of time will cause the engine to stall. After waiting for the engine to cool a bit then restarting, it will drive like nothing happened.

1999 Cargo Van E-Series XL

Anti-Lock Brakes

7.3L 445Cu. In. V8 DIESEL OHV Turbocharged

Mileage: 363,117

 

[oldrebuiltdodge]

Right when it stalls, try pouring TEPID water over the IP and see if it starts. You might also check the fuel shut-off solenoid, ans see if it might be getting weak. If the tepid water works, chances are the IP is worn out.

 

[chuckster57]

If it is a 1999 van then it won't have an IP and this thread should be moved out of the IDI forum.

 

[moteinsun]

chuckster57,
I was unsure of where to post, let me know where it should go?


oldrebuiltdodge,
Oh man, I have no idea what you just said, haha. IP? I can google the fuel shutoff solenoid. Thank you for giving me a starting point. I am buying a van with this issue, it did not seem to serious. The vehicle is being used daily still. It is actually a type II ambulance, used for patient transport, no medical equipment in it, purely a transport for people who cannot sit up. Thought that might be helpful.

I know these engines are very well engineered, that is the main reason I bought this van.

So you do not think it is an injector? The owner took it to a mechanic and he said that the number six injector was going out.

 

[chuckster57]

IP is the injector pump. IDI is an indirect injection diesel. It is mechanical meaning no electronics. Your engine is a Powerstroke, and is computer controlled.

There are a number of things it could be, and if you can get a moderator to move this to the right forum, I'm sure you'll get plenty of help. Try sending a PM to Klhansen or M Kolvalsky, they can move it.

 

[moteinsun]

Thank you sir.

 

[oldrebuiltdodge]

It would appear that I should have read a little better

 

[klhansen]

You should check into the CPS (cam position sensor), possibly swapping it out (they're fairly cheap), as they are a common problem.


The other issue is a problem with the IPR (Injection Pressure Regulator) located on the back of the HPOP (High Pressure Oil Pump) in the front center of the engine valley. The solenoid coil on those will sometimes fail as they heat up, then start working when cooled back down. If you can measure the resistance across the coil connector when it dies on you, an open circuit there will tell you that the coil is bad and needs to be replaced. Normal resistance should be between 5 and 20 ohms IIRC.

 

[bigb]

Those symptoms could also be caused by a restricted fuel supply. While it is "cooling off" the crud is actually falling away from the pickup screens allowing it to run some more. Does it have a steel tank(s)? Did you inspect the filter? A fuel pressure test under load is in order.

 

[klhansen]

Those symptoms could also be caused by a restricted fuel supply. While it is "cooling off" the crud is actually falling away from the pickup screens allowing it to run some more. Does it have a steel tank(s)? Did you inspect the filter? A fuel pressure test under load is in order.

Good point. I missed the part about "drives around town fine". Higher speeds (higher fuel demand) can suck debris into the screens, and then fall of when it stalls.
A CPS or IPR problem would most likely shut it off like the key was turned off, but a fuel restriction would make is slowly sputter and finally die.

 

[greenskeeper79]

Drives around town fine, anything over 50-60 mph for any length of time will cause the engine to stall. After waiting for the engine to cool a bit then restarting, it will drive like nothing happened.

LPOP can't keep up with oil supply to the HPOP during higher speeds?

 

[blue99stroker]

Pull the plug on top of the hpo resevoir next time it does it and see if it's empty.

 

[klhansen]

LPOP can't keep up with oil supply to the HPOP during higher speeds?

That would be pretty rare, and starting would be a problem as well. OP didn't indicate any issues with starting.

Pull the plug on top of the hpo resevoir next time it does it and see if it's empty.

See above.

To the OP, you might also try pulling the wiring connector off the ICP sensor (located on the driver's side head behind the alternator), leaving it disconnected (will light the SES light) and see if it dies on you under the conditions that is has been doing that. Also check for oil inside the ICP sensor, which indicates an impending failure. Also check the wires to the sensor for cracked or otherwise deteriorated insulation.