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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Mystery surge/stumble 900 1993

posted by  Parts_man on  Mon Apr 23 04:03 CST 2007
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Wed Dec 18 19:55 CST 2013
[RELATED]

1993 965 216,000km.
Once my car is up to operating temp I'm getting an intermittent fluctuation in idle and a stumbling when maintaining a consistent speed. There is also a hesitataion on acceleration. Runs fine when cold and while warming up.
I first noticed this on the highway at 120kph in cruise. Engine felt like it was surging, very slightly, but enough for my passenger to comment on it. Then when we got off the highway and were pulling up to a stop sign the tach dropped almost to zero (didn't stall) and began flipping between about 200 to about a grand. I put the car in neutral and reved the engine once and the idle smoothed for a second or two, then started doing the same thing. I can feel the fluctuation at 50kph(30mph)in city traffic also. So far have replaced plugs and cleaned throttle body. Any ideas?






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.