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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Rex/Regina Ignition Coil/Amplifier - Engine cutting out 700 1990

posted by  B.B. on  Thu Feb 9 17:39 CST 2023
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Mon Oct 6 13:15 CST 2014
[RELATED]

4000 RPM? That's far out, are you building a race car?

There are RPM limiting or governor functions in the Bosch engine management
systems.

From Volvo's ignition manual TP31397-1:

All control units are programmed with some type of speed limiting function.

EZK The ECU uses the power stage to interrupt every other plug. Usually becomes active over 6200 RPM.

On Bendix systems the ECU normally commands the power stage to reduce the ignition coil charging period, producing a weaker spark, which reduces the engines output.

Aging ECUs are likely to act up without robust filter caps, that can crap out
with old age. The ECUs must be protected from the high radio noise / RFI from the ignition.

Bill






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.