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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Rough Idle and Dramatic Decrease in Fuel Mileage (~long) 200 1985

posted by  cbremski on  Sat Dec 18 16:19 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

Yo Nick!

when did you last replace your O2 sensor?
A bad FPR could cause a rough idle, but only if it is already toast vs. only starting to fail.
Clean out your ICV yet?
Check for vaccum leaks?
-intake manifold?
-vaccum hoses cracked or brittle?
-any intake other intake points after the AMM that are not secure?

If you have a bentley, it has instructions for testing your O2 sensor in there using a Multimeter, it is based on resistance and isn't that hard to do. Cleaning the ICV- pull it out and spray some brake clean inside, shake it up, re-install and rev your engine at idle to make it spin well and clean it up, however if you have a clogged flame trap or oil separator it will get dirty again real quick.

anyway, good luck!

chuck in mpls
(now ASE certified in Brakes and Electrical! YAY!)

BTW- very nice 240!!! love the RED!
'88 244 174K, '87 BMW 325e 180K (used to feed a '84 245, '84 244, '85 744)






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.