Volvo AWD V70-XC70 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 5/2003 V70-XC70 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Why does air pump run after car is warm? V70-XC70 1998

posted by  cleeland on  Sat Jan 11 10:25 CST 2003
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

I have a 98 V70 R AWD. The air pump is very noisy (imminent demise, I know). But, the strange thing is that the air pump runs at times other than right after startup.

My understanding from all I've read is that the air pump is used to get the car into closed-loop operation sooner by permitting timing to run retarded due to more air in the system. However, I regularly experience the following: after a long run on the freeway, I'll get off at an exit and come to a stop. While waiting for the stoplight to change, the air pump will kick on. What's up with that?

Come to think of it, it will also do it after city driving to my son's daycare, right after I pull into the parking space.

Any explanation? Is there possibly another part/sensor that's failing that could be causing the Motronic to run the air pump to compensate?

Thanks!
-cj






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New Why does air pump run after car is warm? [V70-XC70][1998]
posted by  cleeland  on Sat Jan 11 10:25 CST 2003 >


<< < > >>



©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.