So I am doing a S4 PFC conversion with my TII. Bad news is today while checking for fuel lines for leaks(run a hot pump so I needed battery power for 12V switch), my upper intake manifold slide down and touched the HOT wire on my alternator and caused a big spark( I was being ******* lazy and didn't want to re-zip tie my vac lines) . Big enough to cause my Main 80A fuse to blow. I was worried about my PFC so I went to check if it operated.... NO GO.

First off I never got to check if my PFC worked because I was still working on the engine. BUT when I went to check if the unit was OK after the Boo Boo, once I turned the ignition ON and my datalogit red light was lumminated but no commander was lit up.

Problem is one of my four fuel injector resistors is getting very hot when the ignition is cyced to ON. It is wire 3E on the harness. The Power FC commander wont light up and I know the resistor doesn't get that hot. Why is it so hot? I need to check the injector grounds for continuity BUT until then any ideas? I assume it is a short but where?

I hope to God I didn't fry it.

any help is appreciated and I feel like a complete *** for doing something so ameatur

thanks guys.

 

So I checked continuity on all injector grouds and 12v wires and they were good.

-My four resistors all checked out good @ 10 ohms each.
-Each fuel injector wire put out roughly 12.17 volts when ignition is ON.

I did find this though: I decided to check my impedence on my secondaries and they checked out good at 4.5 ohms BUT my primaries are down to 2.3-2.5. I SWEAR when I checked them a year ago they were around 4 to 5 ohms.

Can injectors fry? could this be the route to the problem. The resistor that gets hot is a primary injector wire.

Kinda stuck from here because wires check good. hmm?