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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Vacuum question followup (just to beat the dead horse) 900

posted by  someone claiming to be tjts1 on  Mon Feb 14 15:00 CST 2005 [RELATED]

I put a few more miles on the 960 with the vacuum gauge installed where my now defunct fuel gauge used to be.
This is how it looks
2 more things I have noticed over the last few days. With a cold engine at idle in park, vacuum is 17" hg. When the engine warms up, idle vacuum rises to 19-20" in park. What does this mean? Im not sure if the knock sensors are the cause but i'm going to replace them anyway.
When I shift into D, vacuum drops by 1" in both situations.

This is the part that bothers me. At idle needle vibrates very fast + - 1". It vibrates so much that you can actually hear a buzzing sound from the gauge. This goes away as soon as I touch the gas. Everything I've read so far says this is supposed to indicate leaking valve stem seals and should be acompanied by oil consumption and smoke in the exhaust. But this engine consumes zero oil over 5000 miles and there is no smoke. It passed smog with flying colors a few months ago. Im starting to suspect leaking intake gasket or maybe one of the 6 hose connectors on the intake runners. What do you think?
Justin






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.