question powerstroke
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Joined: Jun 2010
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question powerstroke
2001 f350 diesel 30,000 . running fine then serv eng soon light with 80 % drop in power . hardly idles or drives. no codes . any ideas? good oil psi ,elect and temp. anything will help thanks,,
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
Is it full of oil?
you should post in yhis forum https://www.ford-trucks.com/forums/forum31/ lots of 7.3 knowledge there
you should post in yhis forum https://www.ford-trucks.com/forums/forum31/ lots of 7.3 knowledge there
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
If the SES light is on, then there are codes stored. If you aren't pulling up codes, then the code reader you are using isn't compatible with PSD's.
These trucks have an OBD-II port, but they are technically not OBD-II compatible. They throw Ford-specific codes, and you need a compatible scanner or diagnostic tool to read them.
Just based off your post, my first bet would be a loose UVC harness. It's unplugged, and one entire bank of injectors isn't firing. If you do get access to a compatible diagnostic tool, look to see if a P1316 code is thrown. If so, then you'll need to pull codes off the IDM to tell you which bank is dead. Once you know which bank, you can pull off that valve cover and re-connect the harness.
In addition, Ford does have harness adapters that prevent the UVC from coming unplugged again. So if you go that route, you can pull both valve covers off, put in the clip adapters, and be done with it. And if you're really creative, you can grab 2 quarters, grind them down to size to fit in the UVC, and use those instead of the Ford adapters. We call that the "50 cent mod".
These trucks have an OBD-II port, but they are technically not OBD-II compatible. They throw Ford-specific codes, and you need a compatible scanner or diagnostic tool to read them.
Just based off your post, my first bet would be a loose UVC harness. It's unplugged, and one entire bank of injectors isn't firing. If you do get access to a compatible diagnostic tool, look to see if a P1316 code is thrown. If so, then you'll need to pull codes off the IDM to tell you which bank is dead. Once you know which bank, you can pull off that valve cover and re-connect the harness.
In addition, Ford does have harness adapters that prevent the UVC from coming unplugged again. So if you go that route, you can pull both valve covers off, put in the clip adapters, and be done with it. And if you're really creative, you can grab 2 quarters, grind them down to size to fit in the UVC, and use those instead of the Ford adapters. We call that the "50 cent mod".
