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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

940 intermittently sluggish, only when hot 900 1993

posted by  Jim Holst on  Thu Sep 9 04:35 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Tue Jan 4 11:05 CST 2011
[RELATED]

I don't have an answer but I've had similar problems with my '93 940 and Art Benstein has also reported this. In our cars the lack of power is very intermittant. It happened 2 or three times last summer and maybe twice this summer. My car has the Regina system so the FAQ are less helpful. I did the fuel pump relay resoldering, cleaned the throttle body and reset the throttle linkage to factory specs. I've replaced the crank sensor (for a no-start problem), the distributor cap and rotor, the plugs, and the spark wires. The car runs fine except for the occaisional power loss you describe.

Since it only happens in very hot weather, I'm thinking the problem may be fuel pressure related. I'd like to get a fuel pressure guage to check this. One outside possibility is vapor lock. The 940 runs pretty hot under the hood. If the fuel pump was weak, the check valve sticking, or the FPR bad this may be the result.

I'll follow any answers to this post with grest interest.






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.