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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

intermittent engine power failure - hesitation - O2 sensor check? 200 1988

posted by  tbb2 on  Mon Mar 28 11:59 CST 2011
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Wed Jul 16 18:57 CST 2014
[RELATED]

Two times now I have gone out for a 15 minute drive stopped, not long enough for the engine to cool down, and on the ride back home had a power problem.

Both times I was going about 25 MPH and on a slight up hill. I notice the car slowing down, then felt the kicks of hesitation. I slow down to 20, flashers on, tapping the gas. After about 1/4 mile the engine comes back to normal.

(?)

I have also been looking at a fluctuating throttle (?) that I found when checking my idle and timing.

I'm guessing, besides a sticky choke plate, that there is some sensor feedback loop that is about to fail.

The only suspects I have are the AMM and O2 sensor. I also still need to clean the PCV oil trap

Which wires on the OS sensor (2 white, 1 black) do I check spec resistance between?

1988 244 DL






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.