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AC compressor will not engage

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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pfougere
Posts: 1
Joined: 23 July 2009
Year and Model: 740 1991
Location: Sacramento

AC compressor will not engage

Post by pfougere »

1991 Volvo 740 wagon non-turbo. AC was working fine, but now the compressor does not start when the button is out. Suggestions please.

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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 »

Welcome to Matthew's Volvo Site.

The first thing to check is the refrigerant charge. If this has leaked or become too low the compressor will shut down to protect the system.

Do you have Manual Climate Control (MCC) or Electronic Climate Control (ECC)? The latter has a self diagnostic unit built in which may help with diagnosis.

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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