Volvo RWD 200 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 9/2009 200 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Testing vacuum pump on 85-89 cruise control ? 200 1988

posted by  mike chase on  Sat Jun 25 15:11 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Mar 12 05:48 CST 2010
[RELATED]

Some questions about 85-95 cruise control not covered in the FAQ:

1. Anybody know how to test the vacuum pump operation on the '85 to '89 cruise control? ( See diagram at http://mikechaseleadership/Curise.jpg )

From the diagram it looks like current is applied to post #3 on vacuum pump through the cruise control switch (is that correct?). Which post is ground applied to on the vacuum pump (#1 or #2?)? And why is there a third post?

2. How many inches of vacuum should the pump be able to pull?

3. Anybody know if the orientation of the Control Unit is critical? If yes, it is to be horizontal or vertical?

4. The Control Unit is grounded through pin #8. What is the signal that is applied to #3 on the Control Unit from the air valve switch and brake switch? Seems like it may be ground too (and if air valve or brake open the curcuit then there is no ground?) Is that right?

Mike

http://mikechaseleadership/Cruise.jpg






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New Testing vacuum pump on 85-89 cruise control ? [200][1988]
posted by  mike chase subscriber  on Sat Jun 25 15:11 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.