More AC - 90 CQ

[Huw Powell]

Andrew Duane wrote:
> I think that's the way it's supposed to run. I'm pretty sure I remember
> my 100/A6/A6A working that way.
> 
> quattro-bounces at audifans.com wrote:
>> Hi List,
>>
>> As long as we're on AC problems here, I've got a 1990 CQ with the AC
>> Delco-style automatic climate controls.
>>
>> The problem I'm having is that the AC cycles on and off at about a 45
>> second period.  I set the controls to auto/LO/fan high and rev'd the
>> motor.   I can see the clutch on the AC compressor coming on
>> and off at
>> the 45-second interval.  It's very annoying while driving
>> because the car
>> lurches a little every time the compressor comes back.
>>
>> I'm hoping it's just low on coolant and I can find some R12, but does
>> anyone have any other ideas?   I still haven't found a
>> Bentley for this
>> car, so I don't have the factory service checklist for this AC system.
>>
>> Thanks!
>> -m

Isn't there supposed to be a relay or signal to the ECU that tells it 
when the compressor is on, so it can compensate a bit for the load?

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/