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Weird stuff...$4F code on 8747 ECM with a CPS???

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Old 04-07-2004, 09:54 PM
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Weird stuff...$4F code on 8747 ECM with a CPS???

Does this mask/ECM use a crankshaft position sensor? One of my friends got a TBI and he says it has a CPS. DIY-EFI archives (GMECM part) don't say anything about this ECM. I thought it was basically the same as a 7747 or 8746.
Old 04-08-2004, 06:41 AM
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Re: Weird stuff...$4F code on 8747 ECM with a CPS???

Originally posted by jeepguy553
Does this mask/ECM use a crankshaft position sensor? One of my friends got a TBI and he says it has a CPS. DIY-EFI archives (GMECM part) don't say anything about this ECM. I thought it was basically the same as a 7747 or 8746.
Some of the real late stuff uses a crank sensor, but nothing that I know of used them, and a 747, or 746.

747, and 746 are very similiar.
Old 04-08-2004, 06:55 AM
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Car: 1980 Jeep CJ7
Engine: AMC 360 with GM TBI
Transmission: TF727 set for kill...let's get it on!!!
Hmmm...then I wonder what he is calling a CPS. I didn't think it had one. I'll get him to send me a pic of his "CPS".
Thanks, Grumpy. You da MAN!
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