Keep blowing fuse #40

[Jhalil101]

We’re working on a 2021 GT. We just installed a ported manifold with lockouts and did oil pump gears. The car was driving great and then suddenly we blew fuse 40 (vehicle power 2). This fuse powers the O2s, VCTs and a number of other essential sensors keeping us from doing WOT pulls. I’ve read through other posts on this issue but haven’t found a solution that works for me. We’ve checked over the harness and replaced the O2 sensors but are still getting a blown fuse. We’re pulling the manifold now in hopes to find a bad wire. Anyone got anything else we should check? Thanks.

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[Jhalil101]

Just update we pulled the engine harness and are gonna check everything one at a time

 

[NZGUL]

Just update we pulled the engine harness and are gonna check everything one at a time

Having all sorts of issues mostly related to the VCT solenoids, even replaced with the FP ones. #40 tripped every HPDE session this past Saturday, only 300 miles on new solenoids and pigtails. Has to be related to an electrical issue? Any ideas?

 

[Jhalil101]

Having all sorts of issues mostly related to the VCT solenoids, even replaced with the FP ones. #40 tripped every HPDE session this past Saturday, only 300 miles on new solenoids and pigtails. Has to be related to an electrical issue? Any ideas?

I had a short on wire for the rear O2. The edge of the transmission rubbed through the wire. Addressed that and never has an issue again.

 

[NZGUL]

I had a short on wire for the rear O2. The edge of the transmission rubbed through the wire. Addressed that and never has an issue again.

Ok thanks for the update

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