Ford 7.3 Powerstroke Under Valve Cover Wiring Harness
This is an FYI.
I just discovered that the 7.3 Powerstrokes have a known problem with the under valve cover wiring harness (UVHC). The connector for the injectors/glow plugs can come loose. This can result in the entire bank going out or just glow plug or injector.
In my case, I had a glow plug code and then a few days later an injector went out.
The newer harnesses are supposed to fix the problem.
There's also a fix for the existing harnesses, but I think a replacement is a better option. Part of my harness broke as I was debugging the problem. It's possible it was my error in handling it, but I think it had turned very brittle and broke with very little force.
Now I have the wiring harness for both sides on order.
I would hate to have this happen when in the road for vacation or something.
I'm no expert on this issue. It can be researched further on ford-trucks.com in the 7.3 Diesel section as well as other truck forums etc. I suspect that if you have a good shop you deal with they are well aware too....
I just discovered that the 7.3 Powerstrokes have a known problem with the under valve cover wiring harness (UVHC). The connector for the injectors/glow plugs can come loose. This can result in the entire bank going out or just glow plug or injector.
In my case, I had a glow plug code and then a few days later an injector went out.
The newer harnesses are supposed to fix the problem.
There's also a fix for the existing harnesses, but I think a replacement is a better option. Part of my harness broke as I was debugging the problem. It's possible it was my error in handling it, but I think it had turned very brittle and broke with very little force.
Now I have the wiring harness for both sides on order.
I would hate to have this happen when in the road for vacation or something.
I'm no expert on this issue. It can be researched further on ford-trucks.com in the 7.3 Diesel section as well as other truck forums etc. I suspect that if you have a good shop you deal with they are well aware too....
