ECM/CPI Question for 93 Blazer 4.3 Vortec.
#1
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OK I bought my truck 1 1/2 years ago. It's been running great up until 1 week ago. Started having electrical issues. Anyhow, I pull the ECM and have part# 16196395 BBNT. So I'm looking on E-Bay for another ECM. I'm seeing alot of ECM's with the same number, but with BHRJ at the end. I do know my 4.3 was a transplanted motor. So how can I make sure I get the right ECM for my truck? What number can I get off the engine to ensure that I get the proper ECM for it? I'm not sure this was the original ECM to begin with, and since the motors were swapped, I may be looking at the ECM that came with the motor transplant. I may not be...
I'm confused now. Electrical crap is way beyond my realm of mechanical knowledge.
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#2
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If you say your truck was running great with that P/N I wouldn't worry about it. Are you sure the ECM is the problem? If you're really worried about it you might get the serial number off the motor and call a dealer parts department. Most of those guys are pretty cool and they have helped me out in the past whether I bought off of them or not. One even talked me out of buying off him because he thought the price was too high.
#3
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So long as the ECU came from another 93-94 CPI motor, you should be fine, regardless of part number. The programming should be good. You can't go back to a 92 CPI ECU because of the change from the 700R4 to the 4L60E in 93.
#4
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Could ya'll tell me what kind amperage the alternator should kicking out? Thanks
#5
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It would appear that there were 3 different part numbers available for the alternator.
1101618 = 96amp
10479802 & 10479974 = 100amp
But that would be for a stock 93 CPI motor.
1101618 = 96amp
10479802 & 10479974 = 100amp
But that would be for a stock 93 CPI motor.
#6
#7
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85amps was a stock alternator size for a 92 CPI motor so if yours was a transplant from a 92, it could be that low. Ofcourse, that is peak output so it depends on how it is being tested.
#8
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Is there a stamp on the engine that will give us a clue as to what year it was made?
#9
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Short answer - yes.
#10