Well The heater will start to blow and then just slow down and stop. If you turn it off for a time and turn it on again the same thing happens kinda like you blow up a baloon and let the air out

any sugestions ??

bigblue,

Hard to say exactly - which model car do you have?

If it was a 240D I would suggest you check the brushes on the blower motor. If it is a car with the automatic climate control, I think there is enough added complexity in how the blower is controlled that the trouble shooting is above my head. I have never had to get into one of those yet. If the car is twenty years old or so, I might check the brushes anyway.

Good luck, Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)