I flushed the coolant in my car - '86 300E and now when I start the engine and turn the heater on, there is system is blowing cold air - even though I have the temp. dial turned to max.

Any suggestions?????

Thanks.

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1986 300E (3/2002) Rear ended and totaled (10/2009)
2000 Xterra (5/2000)
1992 400E (11/2009) -Sold
1986 300E (12/2009) - Sold
2004 E500 Wagon (6/2013) - Sold

you might have air trapped in the system. with the car off take off radiator cap and start the car turn the heater on let car run for a while then put cap back on. recheck coolant level once it cools.

no might about it. there is an air pocket.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

That has happened to me with my 300TE. (Same engine as your car). With the engine off, and coolant cool (after it has sat for a while) remove coolant reservoir cap and squeeze the upper radiator hose. This burps the car and gets rid of air...other than that run the car with heater on at full blast...that should do it.

But try the burping first....

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Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

Res non semper sunt quae esse videntur

My Gallery

Not in this weather!

did you bleed the top of the thermostat housing?
do this first. then run the engine for a bit. stop and
carefully recheck the level.
then run the car down the road. running at idle won't
get the air bubble out.

george