01 blazer wont get spark after intake gasket replacement
#12
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Join Date: Oct 2014
Location: North Central Indiana
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Disconnect crank sensor connector, turn key to run, and check voltage on the lt green wire to ground with a test light (step 3 of factory procedure). Should light. Now put test light across purple and green wires (step 4 of factory procedure). Should light. Since I assume you don't have the fancy test equipment they call for, that's all you can do except disconnect the PCM and test continuity of the yellow wire in the crank sensor connector to the PCM connector with the DVM. Also check this wire for shorts to ground with the DVM. If all of this is OK - then I would go ahead and replace the crank sensor. But know that a new cranks sensor requires a crank sensor relearn to be performed, and that requires an advanced scanner to trigger it. You may have to go to a dealer to do this or the SES light may remain on after a crank sensor replacement (so don't jump to replacing the sensor first thing). Of course don't forget to inspect the crank sensor connector for damage to any of the terminals.
Good luck! Keep us posted.
Last edited by LesMyer; 10-22-2018 at 10:08 AM.
#13
Are you sure that the distributor cap is secured properly to the distributor? If it is loose, or if the distributor hold down bolt is loose it will throw this code. It is really easy to strip out the threads to hold down the distributor cap.
Also, are you sure you didn't miss plugging in the harness to the distributor? That would result in no spark, and no RPM readings.
Also, are you sure you didn't miss plugging in the harness to the distributor? That would result in no spark, and no RPM readings.
Last edited by El_Beautor; 10-22-2018 at 12:55 PM.
#15
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Join Date: Oct 2014
Location: North Central Indiana
Posts: 3,052

Glad to hear you got things figured out. Thanks for getting back to us with what you found (distributor not in on the correct tooth).
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