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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

p 0410 V70-XC70

posted by  someone claiming to be Mikebox on  Tue May 13 03:40 CST 2008 [RELATED]

I assume no one has had issues with this recently since not responses and search brings this stuff up from back around 2002.

Anyhow, for whatever it is worth, I have narrowed it down to the check valve vacuum controller (located on the radiator shroud). The solenoid appears to have jammed open allowing vacuum to be appled to the check valve 100% of the time. Exhaust backflows to the air pump in much the same manner as if the check valve were stuck open. I have disconnected the vacuum controller, plugged the vacuum line and removed the relay for the air pump. the local dealer ordered the controller ($85) and said this is the first one of those they have ever had to order.

BTW, I tested the relay (late 98 relays are in the main fuse box as relay #2, a Hella brand typical bosch type relay) applying current to pin 86 and ground to pin 85 gives off the audible click of the contact plate and continuity is achieved across the #30 and #87 contacts.






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.