Hi Forum,
I was towing my trailer (7500pds) ack from a trip. All is fine on the highway and then I lost half my boost. In tow high gear it would only boost to 19. When it down shifted because of slowing the boost came back up to 29. I pulled off too try and see what was wrong and as I slowed it died completely and would not start again. No Error codes. Any Ideas?
Its a 2004 June f250 6.0 . Mostly stock. Only mods I know of, is aftermarket air filter and a new Mishimoto rad. Changed oil and filter and fuel filters before leaving on trip. I have a edge monitor, no tunes.

Thanks

 

Going to need to post cranking data. The Edge is a good way to monitor PIDs, but ForScan is more thorough at pulling codes.

Post (cranking):
rpm
Sync
FICM Sync
MPower
VPower
LPower
Injector Pulse Width
ICP pressure
ICP volts
IPR % duty cycle
V-reference voltage

Make sure you are getting fuel to the secondary fuel filter. An empty fuel filter housing SHOULD fill very quickly with the key on - ie in just a few seconds.
Make sure the oil level is good (not high and not too low).
Remove the FICM relay and then remove the oil filter. Crank to see how long it takes to fill the empty oil filter housing (first, try filling it without closing the drain valve in the bottom of the housing).

You also might as well do a quick test to see if unplugging the EBP sensor and the ICP sensor help any. Trying to start with these sensors unplugged will most likely throw a code for each.

Any recent work done?

 

Whatever happened with loss of coolant and 300*F oil temp?

https://www.ford-trucks.com/forums/1...l#post19920713

Was it the radiator (ie and not the EGR cooler)? Did you ever put a plug in the EGR port?

 

Yes, I found a crack in the radiator. It would only leak under a heavy load. Replaced the radiator and still had problems. Found I also had a bad water pump. Replaced that and the truck has been solid until now.

 

I finally had time to look and I have no fuel in the secondary fuel filter??? I removed the cap and tried cranking the engine still no fuel in the secondary. Sound like a bad fuel pump?

 

You do not need to crank to activate the fuel pump. The fuel pump will come on when you turn the key on. There is a timer on it, so after about 20 seconds, it should turn off.

First you should see if you are getting power to the fuel pump when you turn the key on. You should also verify that the inertia switch did not trip.

 

I did try turning the key on and nothing then tried cranking not know and still no fuel. I inspected the wiring and saw nothing. Checked the fuses and everything is ok. What is the inertia switch and were is it located. This failed while driving down the road at about 60mph.

Thanks