someone please help me. i was driving my 98 ws6, stop at a light, and when i proceeded on green, the car started backfiring thru the intake and i lost 90% power. took it to the dealership and they just want my motor. said i needed a new one. took it to another guy and he scanned it. came back with crank position sensor code. ive changed it out twice. can someone please help. my ws6 has been down for 2 yrs since 4 july 2008. desperate!

 

Wiring issue?
Headers on the car? Wiring burned at the starter area?
You have access to a scan tool??

 

Is it a crank postion code or a cam code...if it's a cam code check the wiring on the passanger side at the front of the engine nears where the egr is or was. I have seen serveral 98's with a broken wire to the cam sensor at the connecter right there...It's only on 98's