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

CODES acting wierd, please help!

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Old Sep 30, 2010 | 10:42 PM
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Default CODES acting wierd, please help!

1993 lt1 coupe, just replaced all injectors, and fuel pump. after drives of about 30 miles the car starts to act up and stumble and almost stall out. have to limp home.

CODES SHOWN

#62

#64

#41

#54

#72

Last edited by daniel5625; Sep 30, 2010 at 11:15 PM.
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Old Oct 1, 2010 | 08:58 AM
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Those codes are for unrelated systems/circuits. I would look for a loose connector or poor ground. Did you have these codes before doing the work? Are the symptoms new?
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Old Oct 1, 2010 | 05:33 PM
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Originally Posted by sailorsteve
Those codes are for unrelated systems/circuits. I would look for a loose connector or poor ground. Did you have these codes before doing the work? Are the symptoms new?
the codes are pretty much the same, the injectors and pump helped a bit, also replaced icm, still nothing??
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Old Oct 1, 2010 | 08:54 PM
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The FSM has detailed instructions on troubleshooting for each code. You really can't do much except try replacing random parts without a diagnosis. If the codes all showed up at the same time, that could be a clue, but you're flying blind without the manual.
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Old Oct 1, 2010 | 10:15 PM
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Originally Posted by sailorsteve
The FSM has detailed instructions on troubleshooting for each code. You really can't do much except try replacing random parts without a diagnosis. If the codes all showed up at the same time, that could be a clue, but you're flying blind without the manual.


STOP wasting money and diagnose the problem. What was the problem before FP and injectors?

Did new problem start right after changes or next day, next week, next month?

GIVE US MORE INFO!!!!
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Old Oct 2, 2010 | 05:39 PM
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Originally Posted by daniel5625
1993 lt1 coupe, just replaced all injectors, and fuel pump. after drives of about 30 miles the car starts to act up and stumble and almost stall out. have to limp home.

CODES SHOWN

#62

#64

#41

#54

#72
Unrelated trouble codes are typical for a bad ECM - Wifey's 91 did the same thing and it took me way too much time and parts to figure it out.
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