Hello all, Im new to forum and am hoping ya'll can help me with a problem. I have a 2004 F150 that keeps popping the number 21 fuse on the inside fuse panel every time I go to crank the truck. The fuse is for the DTR sensor, Clutch Switch, Starter Relay, I/P fuse 20. I dont see anything grounding out anywhere or any wires crossed, any ideas on what it could be or where to look for a solution? Any and all help is very much appreciated, thank you in advance.

 

I'm assuming you've already check that the fuse is the right amperage? If so, then I'd whip out a ground/continuity tester as start testing for a short.

 

Is this a "Heritage" model (the old body style)? I have an '04 and there is nothing like that in my owners manual. What is DTR sensor? My fuse 21 says "cluster keep alive power". Big difference between Heritage and "new body" in '04.

 

I'd also suspect the starter relay.

 

yes, it is the heritage model. right amperage on the fuse. Im pretty sure we fried the starter relay but not easy to get to so we had it sent to a shop down the street, I'll post up the results in case anyone needs this info in the future, thanks for the input guys.