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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Heating system - Problem 900

posted by  Aye Roll on  Thu Nov 28 11:15 CST 2002
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Tue Oct 14 21:08 CST 2014
[RELATED]

It sounds as if you have a problem with the vacuum used to open the air flaps inside the dashboard. Have you ever gotten a blinking light on the front of the heater panel? If you have, it's unfortunately in the auto-climate-control unit and you might have to buy a new or used one.

If not, the vacuum check valve in the hose from the engine compartment may be bad, or you could have a torn diaphragm on one of the actuators that opens and closes the main air flap. This is the same symptom that occurs with Turbo's upon acceleration, when the check valve goes bad: fan runs, air never comes out. I have seen rips in the vacuum actuator just next to the gas pedal, under the center of the dash by the firewall. Not a nice one to get at but at least you can see it without disassembling the whole world.
--
Rob Bareiss, New London CT ::: 86 244DL, 87 244DL, 88 744GLE, 91 244: 805K total






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.