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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

a/c low air flow when accelerating 91 740 700 1991

posted by  chuffsy on  Mon May 14 12:23 CST 2007
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Tue Oct 21 18:17 CST 2014
[RELATED]

Ive read the FAQs regarding a reduction in the a/c vent flow when accelerating from start or during cruise. The flow increases after throttle back. I have a vacuum leak .That much I know. The thing is I can hear the hissing sound coming from the controller. Down here in S. Florida I always keep the Rotary controller in the upper (face) position and this is when I hear the hissing .If I rotate the controller to the floor position or the defrost position the hissing stops. Therefor I somewhat conclude that the controller MAY be bad. I pulled out the controller and with the engine running there seems to get good suction from the "White" vacuum line.It is hard to pin point the leak so I will try again. I have mot ruled out the possibility of leaks elsewhere It seems that the controllers are servicible. A new one could possibly be for an arm and a leg. There is a person selling theses things on e-bay with a 2 yr warranty? rebuilt ones that is. Can any of you bricksters in the know make some suggestion?..Cheers ...paul





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.