Hello all.....here again on this forum trying to resolve another issue.......we had a Rousch SC, and long tube headers put on our truck (Vegas Company) about 1500 miles ago. This made this a whole different animal WOW........but driving home 2 days ago on I15 after scouting out some turkeys for a hunt.......the truck just dies, stopped running, so i hook the tuner up to get codes....it says there are no codes. In troubleshooting i can hear the fuel pump come on, everything else works fine in side the truck (so i assume the BCM is fine). I read on the forums about the fuse 27 burning up, so i check that, and the fuse is fine, but in checking the rest of the fuses i find fuse 78 Ignition circuit blown. Im real excited and through another fuse in there (this is 9pm after a 500 dollar tow) and as soon as the wife turns the key to the on position i see a tiny white flash, the fuse blows immediately.The truck will turn over just fine but will not even think about starting. I start looking at wiring diagrams, on that circuit there is only the coils the BCM and the ECU so i talk to the installer....says its probably a bad coil.....ehhh shouldn't it just run like crap if a coil is bad.....i figure hes the expert. So i change all 8 coils (800 bucks) yeah im OCD and put another fuse in and the fuse blows as soon as the key is turned to the on position . Oh yeah if anyone is thinking of getting a SC i would get the Whipple. The way the Rousch SC routes its intake its a 3 hr job to even get to the 2 left side coils and Fuel injectors its a bitch.Im 1300 bucks into this repair and there is no end in site...........Can the ECU fail and not throw a code????? and why would it short a circuit???????

Man any help on this would be greatly appreciated Pat

 

You really should be looking anywhere they did the work. They did a lot of work in your engine bay, and it' very likely that something wasn't connected right, or perhaps rubbed through after they moved everything around. If possible, bring the truck back to the shop that installed your supercharger.

 

You are right Tom it turns out that the harness has a short on the #8 coil they will have it isolated this morning.....not possable to have the shop do it that installed it they are 400 miles away......hope he backs his work up

 

Glad to hear they got it figured out!