Have a code # P-1248 Turbo Boost Pressure Not Detected

My rig has been down for a couple of week replacing the fuel pump and then battling 100 pounds of fuel pressure. Drove it today perhaps 2 miles and it ran like crap, no power and I noticed that I didn't have any boost pressure no mater what I did.

Drove home and pulled the codes and this was one of them. I don't think that I understand how you loose your boost pressure.

Could this have anything to do with the turbo removal and I may have not connected something? I also have code #0475, EPR Circuit Fault. Are these two (2) problems connected ??? (No pun intended)

Rog

 

check the map sensor...

 

I would bet you don't have the MAP line hooked up! I did that once and it drove like and IDI!

 

That's 3 votes for the MAP sensor.

If that's not it then if you are brave you could look into the inlet of the turbo with the engine running to verify that the wheel is spinning, or you could unplug the MAP line and see if you can measure any boost pressure.

 

Where is this map sensor?
Rog

 

0n firewall by heater

 

its the gray bodied sensor (far left of pic) that has the rubber line going to it from the regulator

 

Thank you gentlemen, once again you have been right on the mark. It just doesn't seem fair that such a small hose can have so much effect on our engine, but it sure takes the "POW" out of power.

The truck is now clear of all codes and runs like the stocker that it is. I have some bad glow plugs so now it's the "let's pull the valve covers time party"

I stopped by Ford and picked up new UVC harnesses just in case I need them, if not I can return them.

Before I found this forum and right after I got my truck I purchased a set of eight (8) Glow Plugs on E-bay.

I got them from SSDiesel Supply www.ssdieselsupply.com

They are packaged is boxes marked WAP, Inc. Stamped on the shaft of the plug is "Wellman" below that is "6A843G138"

I went back to their web page amd it appears that they are heavy into 6.5
stuff as well as Bull Dog brands. They no longer list glow plugs for the Ford PSD 7.3.

Question: Anyone ever used these plugs before. They advertize them as heating faster and remaining hot longer. At the bottom of their web page they still have the comparison demo with an Autolite plug.

By the standards of what is now available to us through other sources these plugs were not that cheap. With shipping I paid $9.50 ea.

They appear to be well made so I'll go ahead and use them unless I receive a panick responce from one of you.

Rog
.

 

The truck is now clear of all codes and runs like the stocker that it is. I have some bad glow plugs so now it's the "let's pull the valve covers time party"

I stopped by Ford and picked up new UVC harnesses just in case I need them, if not I can return them.

Before I found this forum and right after I got my truck I purchased a set of eight (8) Glow Plugs on E-bay.

I got them from SSDiesel Supply www.ssdieselsupply.com

They are packaged is boxes marked WAP, Inc. Stamped on the shaft of the plug is "Wellman" below that is "6A843G138"

I went back to Diesel Suply and their web page and it appears that they are heavy into 6.5 stuff as well as Bull Dog brands. They no longer list glow plugs for the Ford PSD 7.3.

I googled WAP Inc. and they have quite an impressive web page with oodles of info. if you take the time to surf around.

Question: Anyone ever used these plugs before. They advertize them as heating faster and remaining hot longer. Their claim to fame is a duel coil internal set-up that is supposed to be superior to conventional GP's

At the bottom of their web page they still have the comparison demo with an Autolite plug.

By the price standards of what is now available to us through other sources these plugs were not that cheap. With shipping I paid $9.50 ea.

They appear to be well made so I'll go ahead and use them unless I receive a panick responce from one of you.

Rog

 

I have never heard of the those GP's. I don't think I would use anything other than ZD11 Beru's due to the horror stories about broken or stuck GP's in the the head. I just bought a set of ZD11's off ebay for $35 shipped to my door.

 

a member on the prepowerstroke forum used these plugs and said they weren't any better than autolites. He had one come apart when he tried to change it.