A/c system full of 134 but has a mind of its own...ideas?

[Jim Dupree]

It could be a low pressure switch/low freon case but usually they will work
for 2-3 minutes and then shut off for 5 minutes and come back on.  Depending
on which Audi model you have (you didn't say) there are several different
components that might cause the problem, coolant temperature switch, A/C
thermostatic switch, high pressure switch, low pressure switch, ambient
temperature switch. Plus it could be a loose wire connection some where. You
should get a wiring diagram for your vehicle and trace out the circuit and
then test where you have voltage and where you don't. The problem will be in
between the 'have voltage' and the 'don't have voltage'.
Good Luck
Jim
1984 4kq
1985 4kq
1985 5kt

----- Original Message ----- 
From: "Obin Olson" <oolsen1 at ec.rr.com>
To: <quattro at audifans.com>
Sent: Saturday, May 29, 2004 9:19 AM
Subject: A/c system full of 134 but has a mind of its own...ideas?


hello all, I took my a/c system apart last year put in new seals new dryer
new orface thingy and filled it up with 134 and new oil..worked great last
year NO problems at all..now this year it works great WHEN it comes
on...seems like the pattern is when it's cold in the morning and I first
start it MAY come on and cool if it does it will stay cooling for say maybe
10-20min of driving then it will stop compression and NEVER come on again
that day..next morning it may or may not come on but it never comes on in
the same day after it shuts down....what in the world could this be? the A/C
relay IS clicking when you push the A/C button ON inside but the compressor
is NOT getting 12v..if I jump the compressor it will work and cool...what
could cause the thing to shut down after a while and not start again till
the next day??

thanks for any help on this weird issue

could it be a bad water temp sender in the engine? if so what one?
_______________________________________________
quattro mailing list
quattro at audifans.com
http://www.audifans.com/mailman/listinfo/quattro