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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Intermittent rough idling and stalling 850 1996

posted by  someone claiming to be ksg on  Mon Oct 9 02:54 CST 2006 [RELATED]

I had this behavior on an old 164E with a failed fuel pressure regulator (stuck so pressure was too high). The fuel pump was the original. I surmised the fuel pump was bad so I put in a new one. With the new pump the car ran worse. I assume the old pump was weak, so the engine ran ok much of the time. With the new pump, but still having the bad regulator, the mixture was very rich, due to more consistent and higher pressure. Car was then very hard to start. Plenty of black smoke in the exhaust. A dealer shop diagnosed the bad regulator.

Also possibly bad ECT sensor or loose connections to it.






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.