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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

still no spark, please help. 700 1990

posted by  richam on  Wed Feb 2 11:09 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Aug 22 17:54 CST 2014
[RELATED]

I have a 1990 740 wagon 8valve non turbo w/ rex/regina system.
It died suddenly while running normally.
I traced the short to the wiring harness behind the alternator.
Three wires were crossed: the hot lead from the alternator, the small red one from the alternator (hence the battery light) and a green wire that I believe runs to the coolant temperature sensor. I repaired the cables.
Still no spark.
The crank sensor has been replaced and I have ruled out the fuel pump relay and the radio suppression relay. The Coil and power stage have been swaped out also.
The coil is receiving some power.
On board fuel injection diagnostics gives me 1-2-3 and 2-2-3.
Coolant temp sensor and idle air control valve. May have been stored from before.
It should get spark.
On board ignition diagnostics (position 6) gives no results.
Only a faint glow.
Could it be the Ignition control unit?
Where is it located? How can I diagnose for sure.
Wow!

Please Help

Richam





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.