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Car Forum / Mercedes-Benz Cars / September 2004

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Intermittent Heat

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Absolutely! - 14 Sep 2004 17:54 GMT
'81 300TD Turbo.  Changed climate control unit and heat started working.
Couple of days later no heat again.  I'm hearing a light hissing sound and
suspect a leak.  Where would be the most likely place to start looking based
on the no heat problem and the hissing?
Tiger - 14 Sep 2004 19:31 GMT
I would check your servo unit... that big blocky thing with heater hoses
attached to it... common problem.
Absolutely! - 14 Sep 2004 19:38 GMT
Would this be the beast behind the glove box that has the actuator attached
to the door on the top and the fan in the bottom?

> I would check your servo unit... that big blocky thing with heater hoses
> attached to it... common problem.
Tiger - 14 Sep 2004 20:49 GMT
No... in the hood.
Absolutely! - 14 Sep 2004 21:07 GMT
Ahhhhhh  Ok, thanks.

> No... in the hood.
 
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