|01-23-2013, 07:40 AM||#1 (permalink)|
Date registered: Dec 2010
Vehicle: Mercedes 1981 240D
Location: Toronto, Canada
2002 Mercedes C240, 200K, poor heat in cold weather
2002 Mercedes C240, 200,000KM
I have the broken damper issue (ticking, no vents going to feet). Could this be realted to the problem?
Having heating issues and its damn cold out!! Takes about 20 minutes for decent heat to come not, and even then its semi warm. Please someone help.
Coolant is topped off
Coolant light is coming on on the PC, sensor error?
Engine heats up within 5-10 minutes so I assume the theromstat is OK
Other then doing a complete coolant flush, flushing out the heating core what can I do? I don't feel like paying a dealership to diagnose it...
Any thoughts? Thanks in advance.
|01-23-2013, 03:35 PM||#3 (permalink)|
BenzWorld Senior Member
Date registered: Mar 2010
Vehicle: 88 560SL - 01 C240 - 02 E320 4matic Wagon
If the coolant level is OK -- it must be a sensor
Have you done anything to the system that would have caused any air to get into it?
Obviously if the vents are not working you will not get the proper flow -- what happens when you try to manually set the air to come out of the vents with they system on HI
What system do you have -- even the basic system has some sort of a self test ..... I have a 240 and the dealer did a test on it before I purchased.
|01-23-2013, 04:52 PM||#4 (permalink)|
Date registered: Dec 2004
Vehicle: CURRENT: 2007 CLK550 Cabriolet, 2002 C240 FORMER: 2001 ML320
Location: Birmingham, AL
If you have damper problems, that could be the problem. Also, it could be a bad duo valve - it's electrically controlled and allows coolant to flow through the heater core. It's on the bottom heater hose - it comes through the firewall right in the center and goes into the engine block there. The valve is right at the engine with an electrical connector on it. It could be a bad electrical connector or just a bad valve.
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