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1994 940 sedan with turbo ac recharge problems

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tompburke
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Year and Model: 1994 940
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1994 940 sedan with turbo ac recharge problems

Post by tompburke » Mon Jun 13, 2016 12:53 pm

I bought an ac pro recharge canister, the connector will not fit on the pressure valve off the canister. Is that the low pressure port? Do I need an adapter valve? I called company and they said that is the valve and it should fit. It is a r134a system. HELP???

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93Regina
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Re: 1994 940 sedan with turbo ac recharge problems

Post by 93Regina » Mon Jun 13, 2016 9:57 pm

tompburke wrote:r134a system. HELP???
Normally installed here, when AC is running (turned on)

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jimmy57
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Re: 1994 940 sedan with turbo ac recharge problems

Post by jimmy57 » Mon Jun 13, 2016 10:25 pm

On that year model the fill valve is a high side system valve and is only used by factory. It is not the standard service port as fitted later.

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93Regina
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Re: 1994 940 sedan with turbo ac recharge problems

Post by 93Regina » Tue Jun 14, 2016 11:09 am

jimmy57 wrote:On that year model the fill valve is a high side system...
If it has a GM dryer with low pressure switch...one could remove low pressure switch, and fill this way with AC running and switch by-passed.

Otherwise, suck it down, have a jug of R-134, with gauge lines purged, and then let liquid run into high side with engine off.

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