From digest.v4.n836 Sat Jul 13 05:31:34 1996
From: "Don Schmidek" <dis_at_metricom.com>
Date: Fri, 12 Jul 96 14:44:53 PST
Subject: RE: E30 A/C and Aux fan question
TJ wrote about his AC fan:
Here the suggested fix: Find the AC fan relay, a four prong affair,
and replace it. This relay is operated by the AC switch directly, and
works in parallel with the radiator sensors. It put the fan into a
low speed mode.
Let me know if this fixed it.
From: TJ Noto <tjn_at_rahul.net>
Date: Fri, 12 Jul 1996 07:50:07 -0700
Subject: E30 A/C and Aux fan question
I've been trying for several months now to get the A/C and Auxilliary
operational on my 87 325is and am dumbfounded at this point. If
any ideas I'd love to hear them.
Here's the situation...
The A/C stopped blowing cold air a few years ago......I neglected to
about it till last summmer.....at that point, I replaced the
Auxilliary fan cos
it was inoperable....
The aux fan is supposed to blow ANYTIME the A/C is on to prevent
of course has two speeds when the coolant temp reaches 196 and 210
degrees F respectively.
It does not ever come on under normal conditions, nor does it come on
after the car is
turned off and is sitting still. Even in the very hot weather (95
degrees) we've been
having lately. The coolant temperature in the car is always
a Ducati-laden trailer in 90 degree heat for hours on end.
The Aux fan will work on both hi and lo speeds if I jumper it....I've
temperature sensor that goes in the radiator...
I've checked both lo and hi speed relays AND their related fuses.
I've replaced the A/C/recirc switch in the dash....
I've charged the system with freon and it blows cold air, and the
on when it needs to.....but I'm afraid that it's going to dump the
freon without the
aux fan working....
Any E30 owners been down this road?
The Bentley manual leaves me hanging.....you can test the Aux fan by
jumpering the wires
on the connector to the temp sensor.....but past that it's not much
good. Interesting that
if I jumper the green/black and black wires (supposedly lo-speed) the
aux fan doesn't work,
but it clicks the compressor on....
TJ Noto Palo Alto CA USA http://www.rahul.net/tjn
Owned by: 95 Ducati 900ss 65 MGB 87 BMW 325is 70 Triumph TR6
"Once again Yankee ingenuity Triumphs over British craftsmenship"
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