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Old 01-08-2008, 05:17 PM   #7
88PA
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Join Date: Jan 2008
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Re: New to Buick and this Forum, some help please..

Well, here are the results of my test.
Referencing the above wiring diagram this is what I found using a Fluke 8060.

To check the Cam sensor I used Cam sig. in- M&J at the ICM connector, 136 Hertz and about a third of a volt, Freq. increased with speed.

To Check the Crank sensor, Crank sig. in- M&G 317 Hertz, no voltage even in the MV scale. Sync sig. in- M&H 60 Hz increases with speed, small amount of voltage.

I used sensor gnd M on both.

It seems like I hooked up correctly and that both sensors are working but, I wish I knew what a good reading would be verses a bad reading (any thoughts?). I also checked terminal F with reference to sensor grnd M and had 47 to 55 Hz, small amount of voltage.

I tried to remove the crank sensor to clean it but it wouldn't come loose, do I have to remove the Harmonic Balance wheel to change this?

OK, did I test these sensors right or do I need to do something different? All tests were at idle speed unless I sped up the engine by hand.

Thanks again for all the help!
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