1994 Ford F-150 Repair Question
Topics covered: Fuse, Blown fuse, Cooling fan.
Mileage: 125,000 miles.
Mileage: 125,000 miles.
Asked on July 7, 2011
Relay control module 1994 f-150
1994 f-150 5.0 L, 4x4. My speedo, odometer, went out and my auto transmission started******** hard when shifting into higher gear. I had the same problem 3 years ago and I changed a blown fuse (position 18) and it worked fine.
The same problem showed up 6 months ago, but this time the fuse was not blown. I took it to a mechanic who replaced (he said) the relay control module ( part #F6DF-12B577-AA) . does this sound right, and how do I find the location of the module on the truck and how easy is the repair myself if I get the part? Thank you
The same problem showed up 6 months ago, but this time the fuse was not blown. I took it to a mechanic who replaced (he said) the relay control module ( part #F6DF-12B577-AA) . does this sound right, and how do I find the location of the module on the truck and how easy is the repair myself if I get the part? Thank you
Asked by salgar444Answer
Replied on July 7, 2011
The part number is for a CCRM (Constant Control Relay Module) but I don't believe the F150 even has one and the cars that did, it housed the A/C relay, cooling fan relay and fuel pump relay, all of which this truck has individually.
Replied on July 7, 2011
OK. So how would I go about trying to find out what the problem is?
Replied on July 7, 2011
Sounds like an issue with the Vehicle Speed Sensor but it needs to be diagnosed properly.
Replied on July 8, 2011
I understand you want to troubleshoot the VSS. You will need a lab scope for that.