As for the IMRC, it sounds like it is failing. You will likely have to get a new one. Check ebay, classifieds or try calling up Bill Jenkins. They are pretty expensive. Someone on here might have one they are willing to sell you.
The tranny issue i'm not sure about. Try searching in the tranny section.
I doubt that the two are related though.
1999 Mystique LS V6
Alpine CDA-9807, Rear deck sub, Opt. TB, K&N RU-3530/MAF adaptor, custom heatshield, FSVT 17's, SCT 4-program chip, Eibach's/ST200's, Hella Fogs...
| 
