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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-10-2007, 01:34 AM   #21
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So I had today off and went and picked up the Crank Sensor this morning from the Dealer cost me $45 tax in.

After getting the Crank Pulley/Harmonic Balancer off using a Balancer Puller as suggested earlier by J Wik, I discovered that the crank sensor was cracked a little bit were the bracket holds it on the bottom.

Upon closer inspection of the HB I found minor wear marks on the teeth were it had just started to rub on the sensor.
So I made a return trip to the "Stealers" to grab the HB at $240 + taxes (my cost, trade) because I couldn't wait to get it from GM Parts Direct.

I just wanted to share some tricks I learned while doing this job, in case anyone else reads this that is attempting this repair. I wish I had taken pics.

When trying to align the Crank sensor;

1) Loosen the bolt that holds the sensor in the bracket, but Do Not completely un-thread it.
2) Slide the new sensor into the bracket until the end is flush with the end of the bracket closest to the Crank, this should be close for placement.

Note: In this step (below) Do Not drive/hammer the HB all the way on, placement is only temporary to align the sensor properly. Check frequently during this process to make sure the fins are not making contact with the sensor, by laying under looking up at the sensor.

3) With the plastic shield off, align the HB/Crank pulley with the key-way and start to gently hammer back into place using a Big Brass drift or a big socket (Do Not hammer directly on the Pulley). You only need to put the pulley half way into place for a test fit.

Note: Lay under the car looking up and you should be able to see the sensor fins in relation to HB fins push or pull the sensor in or out as necessary to align. Make sure that the fins do not touch each other for proper placement.

4) Once you are satified with the location of the sensor, tighten the bolt (from underneith) that holds the sensor into the bracket.

5) Remove the HB/Crank pulley once more with the puller.

6) Install the plastic shield and plug in sensor

7) Install the Pulley/Balancer and tighten into place with the Crank bolt.


Thanks for all the help,
Dutch
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Old 08-10-2007, 11:41 AM   #22
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Did the codes go away?
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Old 08-10-2007, 03:57 PM   #23
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Don't know yet I'm waiting on a new upper tensioner.

When I started pulling the belts I noticed that the tensioner had burn marks on it and a little play, from the SC failiure a while back.

Do you know how reliable the replacement one is from GM ?
Supposedly the pulley wheel is made from Poly carbonite (Plastic).

I will post back once I get her on the road again.

Thanks,
Dutch
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Old 08-10-2007, 04:16 PM   #24
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I haven't had to replace any tensioners, so I don't know how reliable new ones are.
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Old 08-12-2007, 01:50 AM   #25
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Well so far so good
No more codes, here'* hoping it stays that way.

Thanks for all the help,
Dutch
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