Air Conditioning switch`

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Jan 6, 2002 | 02:25 PM

CantDrive55

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Joined: Feb 2000

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Air Conditioning switch`

My selector control on the air conditioner in my 90 F-150 doesn't work. It's either off or on defrost. Any ideas before I tear into it? Thanks alot

Jan 6, 2002 | 04:11 PM

nitro94

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Joined: Feb 2000

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From: Wichita USA

Air Conditioning switch`

If you are saying that no matter where you put the selector lever the air only comes out of the defrost vents then I would look for a vacuum leak in the suppy line for the mode control. It starts at the intake and goes to a resevoir and then to the firewall where it passes thru to the controls inside. Somewhere under the hood you will usually find the problem.

Jan 6, 2002 | 08:26 PM

Pastmaster

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From: Lee's Summit MO

Air Conditioning switch`

Is the compressor cycling? If it's not I would suspect the cycle switch first. Its the little switch on the outside of the accumulator. You can unscrew it without losing much R12/R134a.

'93 F-150 loaded and modified!

http://briefcase.yahoo.com/toydestroyer1