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1992 940 Air conditioning

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
1997 - 1998 V90/S90

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billofdurham
MVS Moderator
Posts: 6507
Joined: 2 February 2006
Year and Model: 855, 1995
Location: Durham, England
Been thanked: 5 times

Post by billofdurham »

Glad you fixed it and let us know.

Don't wait till summer. The AC should be run at least once a month even during the cold season, obviously on a heat setting, to stop the seals drying out.

My 850 has a manual control heater but I make sure that the AC is switched on when I demist the screen.

Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.

gameboo
Posts: 27
Joined: 3 August 2005
Year and Model:
Location:

Post by gameboo »

turns out its a severe ac leak. I just don't know where it is. I get teh ac working for 10 minutes then it shuts off because of leaking fluid. If I refill it, it goes back on. I tried checking with dye but can't find a leak anywhere. Is there a common place where it is leaking?


Is it usually a metal hose that leaks or rubber?


Thanks,
Rich

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billofdurham
MVS Moderator
Posts: 6507
Joined: 2 February 2006
Year and Model: 855, 1995
Location: Durham, England
Been thanked: 5 times

Post by billofdurham »

So what went wrong? On June 10 2007 you had full pressure and now a severe leak.

One of the most vulnerable points on the 940 is the condensor. I lost two in 5 months on mine due to stones being thrown up by other vehicles. Those leaks were easy to find, I just followed the noise.

What sort of dye are you using? Some need a black light to detect the leak.

Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.

gameboo
Posts: 27
Joined: 3 August 2005
Year and Model:
Location:

Post by gameboo »

I'm using a dye made by dynamics. It comes with a black light that I've been using. I have been having trouble spotting a leak with it though.

What type of noise was your condenser making? I didn't think there were any moving parts in it.


Rich

User avatar
billofdurham
MVS Moderator
Posts: 6507
Joined: 2 February 2006
Year and Model: 855, 1995
Location: Durham, England
Been thanked: 5 times

Post by billofdurham »

It made a hissing noise as it had a hole in it where the gas was coming from.

Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.

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