blows fuse
#1
blows fuse
Greetings to all. I have a 1999 Lightning I bought new.
6 months ago, I rebuilt the motor, but kept the original transmission.
A couple of months later I blew fuse 24 in the front box.
That is for the trans side of the PCM and the CMS sensor.
Along the way, I had a new billet transmission built. But fuse 24 keeps blowing at odd intervals (from 2 minutes to 10 hours).
No wiring seems to be pinched and is free to the touch. (behind the right head area and down the transmission)
Before I start dismantling the truck, I wanted to ask if anyone has a suggestion?
Thanks!
6 months ago, I rebuilt the motor, but kept the original transmission.
A couple of months later I blew fuse 24 in the front box.
That is for the trans side of the PCM and the CMS sensor.
Along the way, I had a new billet transmission built. But fuse 24 keeps blowing at odd intervals (from 2 minutes to 10 hours).
No wiring seems to be pinched and is free to the touch. (behind the right head area and down the transmission)
Before I start dismantling the truck, I wanted to ask if anyone has a suggestion?
Thanks!
#2
Join Date: Oct 2002
Location: St. Louis (Out in the woods)
Posts: 7,247
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Start here (ignore the posts in the 2004+ threads): https://www.f150online.com/forums/se...archid=8605164
Sort through them, the answer is there.
Sort through them, the answer is there.
#7
Join Date: Jun 2002
Location: Under the flightpath of old ORD 22R
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#8
Yes, that is a good spot. I have long tubes that are wrapped with fiberglass tape. The sensor wire in that area has a silicone covering.
I have already checked all of the tranny area wiring for chafing, rubbing, cuts and burns.
I am changing out all 4 Hegos, up and down stream. We will see.
I have already checked all of the tranny area wiring for chafing, rubbing, cuts and burns.
I am changing out all 4 Hegos, up and down stream. We will see.
#10