What are the pressures at? What condition is the fan clutch in? What
happens when you jump the A/C Clutch relay in the PDC?
- Bernd
-----Original Message-----
From: Dale Schultz [mailto:d.schultz@sympatico.ca]
Sent: Tuesday, July 08, 2008 8:48 PM
To: dakota-truck-moderator@bent.twistedbits.net
Subject: DML: A/C clutch not engaging if really hot
Hi:
It's been really hot out in the last few days and my '98 Dakota A/C has been
acting up. The system will run and I get cold air when I first turn it on
and
then about 10-15 minutes later the air warms up. Yesterday it was
especially
bad during a 1 hour trek. If I turn off the A/C for a couple of minutes and
then back on the compressor starts up again and I get cold air, then the
symptoms repeat. I took it to the A/C shop and they evaluated, vacuumed and
recharged the system. The charge removed was about 1/2 of a system charge
of 2
lbs. After that the system was tested and seemed fine and the air now even
colder than before, but again after about 10-15 minutes the compressor
turned
off and never came back on. This testing was all done at a stand still so
the
engine compartment was really hot. We checked the DC voltage at the
connector
for the clutch and there was 12VDC present, but the clutch was not engaging.
Do
the clutches suffer from heat related problems or is this just a symptom of
age,
as the truck has nearly 300,000km on it?
Thanks.
Dale
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