The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

A/C compressor failure 900 1993

posted by  Frank924 on  Mon Jul 24 07:53 CST 2006
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

Hi all,

I replaced my son's 944 A/C compressor, accumulator and orifice tube about a month ago. It was good and cold for a few weeks, then exhibited the following odd behaviour. First, it would not work on the freeway. It appeared to work OK in town. THen, it started cooling only when the fan speed was set to 5. I opened the hood and watched the compressor when the fans speed was set to 2 and it was not quite engaging the clutch. It would sort of turn but it was not fully engaged.

I measured the volts at the wire going to the compressor and was getting 12V only on fan speed 5. It was progressively less at each lower fan speed with 1 being about 3 volts.

I assume that the compressor should get 12V no matter what fan speed is selected.

Shortly after I ran that test, my wife drove the car about 50 miles with the A/C on and the fan set to 4. Since then, no A/C. THe compressor does not engage no matter what. Voltage is the same at the fan speeds. THe compressor will not engage even if I jump the wire to the positive terminal of the battery, making me think that she may have ruined the compressor.

What is going on?

ANy help appreciated,

Frank
93 944 115K miles.






USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

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.