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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Struggling with high idle on 1986 240 with LH 2.2 200 1986

posted by  Dave Stevens on  Wed Dec 20 11:09 CST 2023
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sun Jan 1 02:36 CST 2012
[RELATED]

For excessive high idle problems that change with temperature like that, I would have two main suspects a) missing signal from the microswitch on the throttle shaft (ECU doesn't even know it's supposed to be maintaining idle) and b) bad signal from the ECT (either bad wiring connection, or failed temp sensor, rearmost of the two under the intake manifold). Inspect wiring carefully, especially as yours is square in the disintegrating wiring insulation years. Then time to break out a multimeter. There are specs you can find for the temp sensor.
--
Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now






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.