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 

Failed emissions test, Idle too high 200 1983

posted by  NewMexico240 on  Sun Nov 29 18:54 CST 2015
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 11:52 CST 2014
[RELATED]

1983 240 idles at about 1250 rmp.
I can hear the idle switch open and close (click).
I have swapped the Idle Switch and the Idle Control Valve with
good working units.
I can feel an strong suction on the lower hose to the ICV, both
while at Idle and not at Idle, by turning the throttle.
I have cleaned out the throttle body, was not very dirty.
The idle screw and its nut is set low and the throttle plate is barely making contact.
I have attempted to ground the blue/white wire and adjust the fat plastic
idle screw at the lower area of the throttle, I have uses a hex to
tighten it up but am afraid to damage it if I tighten any more, it is
almost all the way in.
The a/c / heater vents open and close strongly, this leads me to
believe that my problem is not an air leak.
I replaced the engine harness four years ago.

I don't know what to check next? AMM? Oxygen Sensor?

Help,
Joseph in New Mexico






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.