They cannot be repaired so far as I know, they are sonic welded
together or something. Usually the seat goes bad on the valve, or it
fails to open properly.
Peter
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: Mercedes List <mercedes@okiebenz.com>
>Cc: Dan Penoff <d...@penoff.com>
>Sent: Wed, Nov 9, 2016 7:35 pm
>Subject: Re: [MBZ] 1990 Mercedes 300E - Heater Issue
>
>Done a flush and fill in recent years? I would suggest checking the
>monovalve, but if it was acting up yo
com>
To: Mercedes List <mercedes@okiebenz.com>
Cc: Dan Penoff <d...@penoff.com>
Sent: Wed, Nov 9, 2016 7:35 pm
Subject: Re: [MBZ] 1990 Mercedes 300E - Heater Issue
Done a flush and fill in recent years? I would suggest checking the monovalve,
but if it was acting up you would just
Done a flush and fill in recent years? I would suggest checking the monovalve,
but if it was acting up you would just get straight heat, and lots of it.
Have you checked to see if air is coming out of the defroster vents? You could
have a leaking or failed vacuum actuator in the ACC system.
Hi All,
My 1990 300E (103K) heater is only blowing warm air not hot. The problem
started last winter and the recent cool weather in the Northeast reminded me of
the issue again. The engine temperature warms up to normal range.
Any suggestions?
Bob
