jo3ser

I just installed a saleen supercharger on a friends mustang, car feels way strong but it will not shift into any other gears other than 1st gear(its automatic)......????

The overdrive button is also not working(wont come on), I checked all fuses in the cab and also all the fuses in the engine bay.

need help please.........

FDNYBullitt

Did you check the transmission harness plug that runs behind the SC, along the firewall. Make sure it didn't come loose or not get plugged back together, good luck.