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Mike V.
Mike V., Auto Service Technician
Category: Car
Satisfied Customers: 25677
Experience:  25 years of experience, Certified Subaru Technician and Nissan factory trained.
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1996 cirrus: ran mechanic stumped

Customer Question

i have a 1996 cirrus,ran fine and one day i went to start it far i bought a new distributor from o reillys,a new computer.this one has my mechanic stumped.he says that its not pulsing or sparking.when he turns distributor by hand it will spark but not pulse.when he hooks it back up no spark.every time we turn key off it will spark once.please help as this is starting to get it possible distributor is bad?is there a test he can do to see if it is good or bad?o reillys says there about testing the computer ?does it have to be programmed by a dealer?all numbers are the same on new one as old.please help
Submitted: 9 years ago.
Category: Car
Expert:  Mike V. replied 9 years ago.
Hi there! It sounds like the ASD relay is turning off the spark.It will do this when there is a problem with the crankshaft position sensor.Here is a test he can try on it.Hope this helps!Thanks

To test this sensor, you will need the use of an oscilloscope.

Visually check the connector, making sure it is attached properly and that all of the terminals are straight, tight and free of corrosion. Also inspect the notches in the crankshaft (4-cylinder) or flywheel (6-cylinder) for damage, and replace if necessary.

The output voltage of a properly operating crankshaft position sensor switches from high (5.0 volts) to low (0.3 volts). By connecting an oscilloscope to the sensor output circuit, you can view the square wave pattern produced by the voltage swing.

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Customer: replied 9 years ago.
thank you wont know if it works until later WRONG ANSWER..TURNS OUT COMPUTER HAS TO BE PROGRAMMED...
Customer: replied 9 years ago.