Volvo RWD S90-V90 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 4/2012 S90-V90 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

'96 965 heater problems S90-V90

uid 19's pic
posted by  jbowers on  Wed Oct 12 04:39 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sun Jan 22 13:49 CST 2012
[RELATED]

That valve is not a proportional valve. It is designed to be either opened or closed. The temperature in the car is controlled by mixing the air from the heater core with unheated air.

Your problem may be as simple as a a vacuum line disturbed somewhere. At the firewall, make sure all 3 lines are OK. One is from the control unit to the valve you focused on. Another supplies vacuum to the control unit and the 3rd sucks air through the internal temperature sensor located in the dome light housing.
--
'96 965, 16' wheels, Michelin Pilot Sports, rear 18mm bar + Koni, 201 HP cams, 129K. Put 200K on '85 745 TD.






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New '96 965 heater problems [S90-V90]
posted by  jimv  on Tue Oct 11 08:44 CST 2005 >


<< < > >>



©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.