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 

Electronic Climate Control Question(s) 900

uid 11021's pic
posted by  dewfpo on  Thu Oct 2 08:29 CST 2014
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Thu Oct 23 18:34 CST 2014
[RELATED]

Thanks for your reply.

I've checked the heater control valve and it works the way it should and only when it should. It also holds vacuum well and doesn't leak.

I can replace the solenoid valve bank (I have a spare that I replaced in a 1995 960 years ago) but I don't see how that could be the issue since it only opens and closes the doors for the positioning of the vents, and allows the heater control valve to open/close. It doesn't blend or mix air. I've checked the air coming out of the the different positions and the solenoid valve bank and vacuum bellows seem to be working and holding vacuum.

This really has me stumped and I've checked or replaced the parts that should be affecting this (as per the green book).

I've heard some of the B6304 engines have two engine coolant temp sensors (one for the dash gauge and one for the ECM) but I think this 98 S90 only has one. The dash gauge reads fine, the engine runs perfectly. But I'll throw a scanner on the OBDII ports and check to see what the ECM is actually seeing.

On this model the ECM supposed controls some of the functions of the ECC system.

Thanks for your thoughts.

DEWFPO
--
1998 S90 088,900 and 1995 964 154,100






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.