Why does my A/C fan blow only some of the time? on 1999 Mercedes-Benz C230

One never knows when it will cease to blow. No reason. Just stops blowing when driving or starts a few minutes after the car starts. Weather does not seem to be a cause nor does humidity. Happens on heater as well as AC.

by in Wilmington, NC on October 21, 2013
2 answers 3 comments
ANSWER by on October 21, 2013
check for corrosion at the resistor
COMMENT by on October 21, 2013
Thanks...where is the resistor?
COMMENT by on October 21, 2013
Blower motor resistor is located by the blower motor itself.
COMMENT by on October 22, 2013
Thanks. I'll tell the mechanic. You have been very helpful.
ANSWER by on October 22, 2013
also ck wiring at plug yjey tend to melt