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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

crazy annoying heater 200 1990

posted by  David Samuels on  Sat Nov 24 03:23 CST 2007
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Mon Oct 20 12:23 CST 2014
[RELATED]

If you get hot air out of the top vents even when the heater control is on it's coolest setting, then your heater control valve is shot. OEM units are hard to find. Not sure if IPD still sells them (pricey). The normal routine is to upgrade to the later style valve. FCP Groton sells the kit. Not an easy fix, takes a couple of hours, but does the trick.

If your fan is staying on, you have a switch or relay problem. If your '90 still has the rheostat, then the microswitch on the side of the temp control is bad. Sometimes they can be adjusted to get more life out of them. You'll see it on the side of the thermostat when you remove it from the dash. If, as I suspect (I can never remember) your '90 has the blue switch for AC, then your switch or AC relay is bad and sticking closed.

The fan running and your vents blowing hot air are not really related.

DS






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.