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Run-on situation 04 XLT w/TDI


jusluv21

Member
U.S. Military - Veteran
RBV's on Boost
Joined
Jan 19, 2024
Messages
8
Reaction score
7
Location
Oregon
Vehicle Year
04
Make / Model
Ford Ranger
Engine Size
Soon to be 2.0l TDI
Transmission
Manual
2WD / 4WD
4WD
Total Lift
1.5 torsion keys
Tire Size
33x12.50r15
My credo
Not my F****ng problem.
So like a dummy, I did a little work to some wiring for a TDI in the ranger without disconnecting the battery. Now I have a run-on situation when I turn the key off. I can pull either the PCM relay on the Ford side or the TDI side. Both are wired into the Ford PCM relay to come on like originally intended. The Ford prints say there is a power diode on the Ford side and I'm thinking maybe that. But I can't find it. I'll be back in it this morning. Anything helps. Thanks!
 


franklin2

Well-Known Member
Joined
Dec 24, 2019
Messages
3,724
Reaction score
1,893
Location
Virginia
Vehicle Year
1984
Make / Model
Bronco II
Transmission
Manual
If you have all your ignition "on" wires all tied to one common point, sometimes something will feedback power and keep things running. The alternator on wire is famous for this.
 

jusluv21

Member
U.S. Military - Veteran
RBV's on Boost
Joined
Jan 19, 2024
Messages
8
Reaction score
7
Location
Oregon
Vehicle Year
04
Make / Model
Ford Ranger
Engine Size
Soon to be 2.0l TDI
Transmission
Manual
2WD / 4WD
4WD
Total Lift
1.5 torsion keys
Tire Size
33x12.50r15
My credo
Not my F****ng problem.
I'll keep that in mind. I haven't looked yet as I found the TDI alternator will still excite and charge of you rev to about 2000 rpms first. That tidbit came from a guy with 3 TDI swaps right now. I'm gonna let it run the way it is for now.
 

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