Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Question on 1996 Lumina
View Single Post
  #7 (permalink)  
Old 07-09-2012, 06:53 PM
LATECH's Avatar
LATECH LATECH is online now
Hotrodders.com Moderator
 

Last journal entry: Motor - vator
Last photo:
Join Date: Jul 2010
Location: Northeast Pennsylvania
Posts: 5,249
Wiki Edits: 0

Thanks: 215
Thanked 261 Times in 243 Posts
Doublevision... which engine do you have? and which type of sensor does it have? I was thinking it has the Hall effect sensor behind the balancer.
The permanent magnet sensor was an earlier style , that pushed in through the side of the block. Not sure at what production date they changed.
I have had both style crankshaft sensors cause a diveability problem like yours.
An ohmeter may or may not give a good indication of a defective Permanent magnet sensor , if it ohms out , it could still be bad, if it has a couple windings shorted to gether, amplitude of the sine wave( PM Generator) may be lower than threshhold voltage required and the signal generated can have a momentary "flat spot" or "glitch" that fails to signal or trigger the signal processor in the ICM /ECM
Ohming a hall effect type sensor is not recommended as usually wont give a good enough indication of health of the sensor.
A hall effect is designed to generate a square wave signal that can only be checked with an oscilliscope.
__________________
Fact is stranger than Fiction
Reply With Quote