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 

Regina problems 700 1990

posted by  Herb Goltz on  Tue Jan 17 08:38 CST 2006
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 13:23 CST 2014
[RELATED]

Hello Roger:

Is the O2 sensor producing a signal? You can measure this at the connector near the firewall by pulling back the cover and measuring DC voltage after the car is warmed up. There is no need to separate the connector, just measure from the connector to a good ground. You should see oscillations from around 0.15-0.9V with a frequency of around once per second or so.

I presume you mean Techron...

A bad fuel pressure regulator can cause the 02 sensor to stay pegged at either extreme. If you pull the vacuum line off the FPR do you smell or see gas in the line? A bad FPR can cause hard starting too. Unless you have the apparatus to measure fuel pressure it is often cheaper to replace it than to pay labor to have it measured...

The other likely candidate is a coolant temperature sensor that is bad and causing the system to run rich.

Good luck!
--
Herb Goltz, Aurora, Ontario, Canada '92 245 w/124K mi, '92 945T w/200K mi






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.