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Date: Mon, 17 Sep 2001 13:40:10 GMT
From: "KeithG" <>
Subject: Re: GM 900 air con

A/C compressor will not engage until there is adequate pressure in the system. This can be overcome by bypassing the low pressure switch. I would suggest leaving the fey 'on' and bypassing the low pressure switch to see if the A/C clutch engages. You should hear a click. KeithG "Huw Jones" <> wrote in message > Hi, > I've just come across this group and it seems pretty well informed. > > I've recently fitted a Saab A/C kit to my 1995 GM 900i. > The system has yet to be gassed. > The components were pretty easy to install but I cannot get the > compressor clutch to operate. > I know the clutch works as I connected 12v to it before installation to > check it. > > I know there is a delay before the A/C comp starts to work to allow for > engine load is this done by a relay, the engine ECU or a pressure switch > in the A/C system? > > Thanx > > Huw > UK

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