Need Help In Clarkston Michigan
 

I have developed a serious stutter in my 91 Zr1. Secondaries seem to be kicking in fine but a lower rpms there is a real stumble. I replaced the alternator and had to pull the throttle body but did not see an issues there. I really need a good trouble shooter/ mechanic. Anyone know of some one close to the Detroit area? Also seem to have a bad driver side window motor. What is the correct part number. I don't really care if OEM but don't want a POS either.

Thanks for any feed back

Jim