PO Botch Job (PIC)
08-23-2003 | 02:24 PM
#16
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Drifting
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From: Golden, CO
Originally posted by GMS
Those parts are the heater actuacting servos. Check the operation of the heater and AC. There is a good chance that the PO "modified" the wiring to overcome some sort of heater fault. So now you need to diagnose whatt he problem acually is before trying to fix it.
Those parts are the heater actuacting servos. Check the operation of the heater and AC. There is a good chance that the PO "modified" the wiring to overcome some sort of heater fault. So now you need to diagnose whatt he problem acually is before trying to fix it.
Thanks
08-23-2003 | 04:14 PM
#18
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Drifting
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From: Golden, CO
The AC compressor only comes on when I bypass the low freon switch... Since this is vacuum related im sure it drives an actuatior with the vacuum. Also the switch doesn't bypass anyhting... It is wired in series with the valve... It is used to turn off the valve when the car is keeping it on... But I need to know what the valve controls and is controled by to diagnose the problem 
08-23-2003 | 05:41 PM
#19
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Joined: May 2001
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From: Southern Tennessee
Since all my 944 experience in the last several years has been in a race car, this is based on my memory only.
With that caveat, I remember placing a similar switch in the power to that valve because I only had hot air when the AC came on. Keeping this from powering kept the vacuum to the heater valve from changing to allow it to open. You could always confirm the function of the switch by taking it out of the circuit and observing the effect.
The AC system in later 944's was made in Japan, so the valve is original. Surprised? The compressors are Nippondenso.
With that caveat, I remember placing a similar switch in the power to that valve because I only had hot air when the AC came on. Keeping this from powering kept the vacuum to the heater valve from changing to allow it to open. You could always confirm the function of the switch by taking it out of the circuit and observing the effect.
The AC system in later 944's was made in Japan, so the valve is original. Surprised? The compressors are Nippondenso.
08-23-2003 | 07:04 PM
#20
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Drifting
Joined: Jul 2003
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From: Golden, CO
Originally posted by Julian Allen
Since all my 944 experience in the last several years has been in a race car, this is based on my memory only.
With that caveat, I remember placing a similar switch in the power to that valve because I only had hot air when the AC came on. Keeping this from powering kept the vacuum to the heater valve from changing to allow it to open. You could always confirm the function of the switch by taking it out of the circuit and observing the effect.
The AC system in later 944's was made in Japan, so the valve is original. Surprised? The compressors are Nippondenso.
Since all my 944 experience in the last several years has been in a race car, this is based on my memory only.
With that caveat, I remember placing a similar switch in the power to that valve because I only had hot air when the AC came on. Keeping this from powering kept the vacuum to the heater valve from changing to allow it to open. You could always confirm the function of the switch by taking it out of the circuit and observing the effect.
The AC system in later 944's was made in Japan, so the valve is original. Surprised? The compressors are Nippondenso.
Does anyone know what controls it? Relay or switch? I will look at my wiring diagram when I get home and see what I can see. Thanks