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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

heater control valve vacuum 900 1993

posted by  SLong on  Mon Sep 7 10:16 CST 2009
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Thu Oct 23 19:52 CST 2014
[RELATED]

Hello all,

I have a 1993 945T. Just replaced the heater control valve with a Volvo part - the cheap (FCP groton) aftermarket one leaked after just one year. I have learned to buy Volvo parts the hard way... But that is another story.

My problem is that the heater control valve doesn't close. It seems as though the vacuum is too weak to close the valve. (I can feel some vacuum in the line to the valve.) The vacuum coming from the engine seems okay. The other HVAC controls seemingly work fine: I can select floor vents, blowing at me, or dash vents and think that the recirculation vent works also. I don't hear anything when the heater knob is turned from the cold (off) position to a warmer position. I think that I remember that there used to be a brief "hiss" when I turned it. My recollection is that the heater control valve worked okay last summer. Any suggestions as to what to check first?

Thanks,
Steve





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.