C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

code 51 bad ecu?

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Old Oct 2, 2013 | 10:09 PM
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Default code 51 bad ecu?

getting a code 51 car was carbed previously
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Old Oct 2, 2013 | 10:46 PM
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http://www.chevythunder.com/codes_5152_55.htm
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Old Oct 2, 2013 | 10:47 PM
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also getting codes 25, 32, 33, 34, 35, 36, 41, 43, 46. it would make since if the ecu/prom was bad/redone and now nothings reading but the car was carbureted so i dont understand why anything would have been done with the computer
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Old Oct 2, 2013 | 10:56 PM
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Is the computer there, and does it have a chip installed?
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Old Oct 2, 2013 | 10:59 PM
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Ecu is there I'm not sure I bought the car carbed so I'm not sure why it would be .
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Old Oct 2, 2013 | 11:06 PM
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Originally Posted by 85corvettec4
I bought the car carbed
i dont understand why anything would have been done with the computer.
Most remove the computer completely with a carb swap as it no longer serves any purpose

You have so many unknowns and so many problems the only realistic fix would be to buy the factory service manual
then work through each ECM circuit to confirm it is correct and operational

Any help from here is only going to be a guess at best because we have no idea what has been done to your car previously.
We can only help if everything is stock config which you don't know it is

Last edited by vetteoz; Oct 2, 2013 at 11:09 PM.
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Old Oct 2, 2013 | 11:10 PM
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It is now as I returned the car back to tpi I have a book so.... Wires here I come
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Old Oct 3, 2013 | 09:11 PM
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http://forums.corvetteforum.com/c4-t...post1585075995 pictures of the chip and computer
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Old Oct 3, 2013 | 09:11 PM
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DELCO HLH 3200 chip
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