Donna:
Sorry about the mis information on pulling the OVP, I assumed (always dangerous) that your 91 would be as simple as my 87 300E. When you look for a shop in the San Diego area (I think that is where you said you were located), a number of members have posted about their favorite or least favorite shops in different cities. The list of shops in SD is at the link
http://www.peachparts.com/shopforum/showthread.php?threadid=3562 Good luck!
__________________
John
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E