Electronic blower regulator sounds bad. Apparently not uncommon as MB has issued an improved part. The new # is 140 821 83 51 , I believe (double check). The blower goes to highest when temp wheel turned to "MAX" and your highest circuit would seem to be out.
Edit:.... looks like joe p already addressed this issue in another thread... look there.
The Golden Rule
1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later)
Last edited by jbaj007; 08-23-2002 at 06:17 PM.