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Hi There!<br>Just looking for clues to run down as my 79 450sl does not put out any heat at all. I just had removed the motor to rplace and oil pan and exhaust maniflod. Now no heat? Engine gets to 185 and the heater hoses are hot. I hear all the vents and vacume doors inside the car moving and am thinking maybe the temp select knob is bad? or maybe the temp valves themselfs are bad? On BMW cars sometimes an air bubble gets in the system and must be bleed out is this something that 450's do also? Just looking for things to check, Thanks!
 
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