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



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

Vacuum guage varries at partial throttle 700 1988

posted by  fisher on  Mon Feb 24 02:44 CST 2003
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

I have been noticing as of late that my vacuum guage will twitch when driving at a constant speed (most noticeable at normal highway speeds). You can actually feel the small surges in the car too. It almost feels as though the turbo is starting to spool up and then stops again.

Has anyone noticed this before?

This past weekend I cleaned the IAC (CIS) motor and my idle is much smoother but the vacuum guage twitching is still there. Also, my idle speed is all over the map (750, 900, 1000, 1500) without any rhyme or reason. This weekend I will do the throttle body - hopefully I can get a constant idle when this is done but I am not sure if this will affect the twitching vacuum as I am driving with the throttle plate open (about 1/5 throttle?).

Thanks in advance
Stephen






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.