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 

random stalling (B230f) 200 1985

posted by  Don Foster on  Mon Feb 4 11:52 CST 2002
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sun Oct 5 11:53 CST 2014
[RELATED]

To answer that question in the past, I built a "spark detector" (neon bulb with a sensor wire) that flickers all the time spark is present. I also built a simple "tell-tale" lamp, connected in to the fuel pump wire under the rear seat.

Both work well.

If the fuel relay or ecu cut out, the "tell-tale" goes out (because the fuel pump loses the 12 volts).

If spark dies, the neon bulb stops flickering. However, keep in mind that when the FI ecu loses the spark primary signal, it ALSO kills the fuel pump (to prevent flooding and/or a nasty fire). So you must be careful in your observations -- you might see the fuel pump "telltale" go out and think that the relay has failed when, in fact, it's doing just the right thing.

Be absoltely sure the 25-amp fuse and holder are perfect.

Clean and tighten ALL the fuses in the fuse box.

And consider what the other poster said about a mis-adjusted or flaky throttle switch, although that will only influence idle when the throttle is at idle position.


Don Foster (near Cape Cod, MA)






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.