Mechanics

HEATER NOT ALWAYS BLOWING SAME TEMP WHILE RUNNING ON THE ROAD VERSAS IDLE

2001 Mercedes Benz CL55 • V8 2WD Automatic • 99,000 miles

I have a cl500 mercedes 2001 and my heater blows hot on
the road but at idle it blows cooler air. Is this a head gasket problem or regulator or what air conditioning works great. Thank you
does not overheat runs great normal took on a long trip to montana from california noticed this in california when weather turned cool.
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Hunter3255
March 12, 2011.



Check the coolant level, thermostat and the air blend door/actuator

Rasmataz
Mar 12, 2011.