The Brickboard

BrickBoard Archives

The files contained in this listing have been automatically archived from the active forums. Because the vast majority of posts are now in one place, this archive is considered legacy. You should use the SEARCH feature OR choose your topic and select date tabs within the forum you choose.


Re: AC shuts down on hills and acceleration[740-760/1986] posted by Philip Bradley on
Friday, 29 May 1998, at 10:08 a.m.


The AC is supposed to shut down on hills and acceleration. Basically anything over 3 or 5 psi of boost, as I recall. Perhaps yours is misadjusted or you go up a lot of long hills where you notice the cutoff or your AC is low on freon or R134a and is marginal even when it does work. --
Philip Bradley


Re: AC shuts down on hills and acceleration[740-760/1986] posted by George Swift on
Saturday, 30 May 1998, at 1:03 a.m.

If my A/C shut down climbing hills, during acceleration, or under high boost, I'd never have A/C ! I have never heard of that, and I don't believe it. I think some mechanic blew some hot air up somebody's skirt because he couldnt find the vacuum leak. I know this is a Ford trick, but I don't think volvo works like that. At least all the one's I work on don't. Straighten me out somebody. --
George Swift / Volvo Car Care


Re: AC shuts down on hills and acceleration[740-760/1986] posted by abe crombie on
Saturday, 30 May 1998, at 10:30 a.m.

The only volvos that have a/c shutdown on acceleration are 89 1/2-91 models with 16 valve 4 cyl., all 850/s/v/c70 and all 960/s/v90.
Any others that have that feature have been JCWhithneyed.
The 16 valve models used an a/c interrupt relay (green or blue on left strut tower) triggered for 12 seconds by full throttle contacts in throttle switch assy.
The inline 5 and 6 cylinder engines do it with programming in the engine management CM that tracks rate of throttle application and amount of throttle opening and determines an off time of between 5 and 15 seconds.




 


©Jarrod Stenberg 1997-2016. All material except where indicated.



Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.

Powered by Denizen Motive Forum - Custom Software for Volvo Enthusiasts