LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

DTC code 64 and 42 after track time

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Old Mar 25, 2007 | 09:11 PM
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From: Herndon, VA
DTC code 64 and 42 after track time

This is what I got right now...........
made 3 passes at the drag strip today (first time with 383 setup)

1st pass ran ok

In between passes 1 and 2, I put 3 gallons of 110 octane in (could this of caused a problem???????????????)

2nd pass got code 42...now code is just saved and I never saw the check engine light but the code did set during the run but never came back.....
so i let the car sit for a bit and decided to run it again and see what happens.

3rd pass went great with no apparent issues.........drove it for about an hour and then was stopped with the car idling for a bit a saw the check engine light (code 64)

Now drove it mainly interstate for about 3 hours and the following conditions exist:
when throttle is applied the block learns around in and around 128 but as soon as I go off throttle or stop the block learns split 108L 160R and after a few minutes the check engine light comes on......then clears once I start moving again. 02s seem to be tracking

setup golen 383 with cc306, delteq, etc....if a more detailed description is needed of setup let me know and i will provide it.
thanks in advance
Rob
Old Mar 26, 2007 | 04:19 AM
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hambone3441's Avatar
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Old Mar 27, 2007 | 09:34 AM
  #3  
hambone3441's Avatar
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will 02s still track if they are damaged by leaded fuel............mine still appear to track?????
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