More A/C ?s and PS pump info
knotnook at traverse.com
Fri Aug 9 09:32:45 EDT 2002
At 11:21 PM 08/08/2002 -0600, Craig Angus wrote:
>Got my car back from having its 3rd PS pump in 35k installed (Warranty? Hah!).
>This is the third pump installed by this tech in the past month on 200s
>from 3 different vendors--all of which failed in less than 30k! Only one
>vendor backed up the pump. ZF apparently will NEVER send you a warranty
>replacement rack or pump unless you're a member of their immediate family.
>Quite frustrating as mine only had 8k miles in less than 8 months. Anyway,
>I noticed a "click" when initially pressing the brake pedal which makes me
>nervous that the bomb and/or brake servo are bad or going too--perhaps a
>contributor to the premature failure(s)??
>The other nagging problem is--ever since I had the recirculating flap
>spring and holding clip replaced--the A/C doesn't blow cold air out of the
>varying periods of time and seems to prefer low throttle (high vacuum?)
>conditions. Air is cold and seems to work fine otherwise. The heater works
>fine too and sometimes it improves functioning to "toggle" between the heat
>and A/C via the temp control. Any ideas or BTDTs on these two conditions?
>Any help most appreciated,
Do you get the red brake warning light that usually appears when the bomb
dies? Do you hear the click if you hit the brake pedal with the engine off?
I doubt there's any relationship between the recirculation flap repair and
the A/C performance symptoms you describe except that the flap working
might make a previous problem more noticeable. There IS supposed to be an
A/C cutoff under WOT, I believe, but it shouldn't occur under less
aggressive acceleration. I'd guess there's some sort of sensor or head
problem if you actually get better performance through the
toggling. There's a thorough and confusing series of tests to perform
described in the Bentley to check out the various sensors in the HVAC
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