I'll check fuse; may even replace it. ;<)
First, they'll put gages on it to determine if it has any charge; if none or
insufficient, they'll put some in it; if comp. still not running, they'll
bypass temp and pressure switches to try to make it run, etc.
Wilton
----- Original Message -----
From: "Larry T" <l02tur...@comcast.net>
To: <mercedes@okiebenz.com>
Sent: Monday, September 30, 2013 9:47 AM
Subject: Re: [MBZ] 124 Climate Control Unit/PBU
I am sure the other comments are probably most accurate but there is a fuse
that controls the AC Compressor - at least there is one on my 91 300D.
Seems my 91 is mimicing yours - last week my compressor stopped working -
not intermittently like yours, just stopped. Goes to shop tomorrow -
not sure how they test for Low Pressure without the Compr running but
that's for them to solve...
Anyway - if your fuse is not making good contact it could cause
intermittent operation of the Compr.
LarryT
On 9/29/2013 5:18 PM, WILTON wrote:
Cabin cooling (compressor) in my '87 300D is working intermittently.
Drove to Chapel Hill and back ('bout 82 mi one way) today; system working
nicely when we started out - could feel and hear compressor cutting
in/out normally. By the time we got there, compressor was not running.
System seemed to run OK after lunch, but on way home compressor not
running. Fan blows nicely and follows instructions via the buttons and
temp wheel normally. Car sat for hour or so after getting home; 'just
went out and started it - BLOWING ICE COLD - 'could not ask for better
cooling; no bubbles in sight glass. Can this intermittent operation of
compressor be a PBU problem? What's most likely? I can try known good
PBU (well, it was working properly few weeks ago in the SDL, anyway) from
the 91 SDL in it. Suggestions?
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