Was popping fuse #45 and ran out of 10A's and all I had was a 30A so in it went. I know, stupid move but I was on the road. Well instead of popping the fuse, this time a small wisp of smoke came from between the shift column cover and the steering wheel along with my pedal and gages dropping out. First I replaced the 30A with a 10A, nothing. Then I pulled the OD wire and cut/spliced where the bad part was. Still nothing. Bought a shift lever assembly from Ford, nothing. Pulled apart the central junction box and nothing was damaged. Put a meter on all the hot sides of the fuses and I'm getting 12v. I made a jumper from the plug of the old OD cancel switch and got gages back but when I hit the accelerator I lose them, let off they come back. So I replaced the accelerator position sensor assembly and no change. I'm into it $200 at this point and to go further I'd be throwing parts at it. I'm at rollback to the shop point.

 

Here are some ideas for you.....

First on your list is a wiring diagram for the circuit. Post Year, Model, Sub-Model and I'll see what I have.

1. Determine everything on the circuit, begin checking each item on the circuit.

2. There could be several opens in the circuit, not just the one you identified for the shifter.

3. A DVMM will be your primary tool for troubleshooting this.

4. I'm sure this is as simple as replacing some wiring and/or some damaged sensors. But, it will take some time and patients to correct. Along the way, you'll need to identify the original short-to-ground which caused the issue.

5. As for a shop, you may end up there. I was the "electrical guru" when I worked. They charged $200 hour for my time. So, it will be expensive, just preparing you for the shock if you go this direction.

Again, I think, this Forum, a clear headed approach, a lot of patients (with a lot of smoke breaks) and some learned skills will get you where you need to be.

I'll post what I have when you post the Year, Model, Sub-Model

Good Luck!

 

2003 7.3 liter F250 Lariat FX4 short bed. The schematic I looked at had the accelerator, overdrive cancel, FWD control module and gages on the fuse #45 circuit.


I'll gladly take recommendations for a reputable shop in central Mississippi.

 

Should I post this in another section possibly?