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PO757 Fluke? 2-3 Solonoid

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Old 10-19-2007, 12:10 PM
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Default PO757 Fluke? 2-3 Solonoid

2001 Corvette - A4 stage II from thunder racing with vig 3200 stall

I was driving down the road at 30-40mph, and gave it a *little* bit of gas to get my speed up and all of a sudden a "check" light came on. I immediately pulled over, and called Horsepower Engineering to help me diagnose. It came up as P0757 which is the 2-3 solonoid for the trans. I reset it, drove down there, and had them test drive the car for 10-15 minutes - it never came on again! I drove it for 20 minutes or so after and it still never came on. It was shifting fine the whole time and even the shop said it was shifting fine. Is this weird???? Has anyone else experienced this? What are your thoughts??
Old 10-19-2007, 12:34 PM
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Very common. It happens to most with aftermarket TC's. You need to have that code and I think P0751 deleted(tuned out).
Old 10-19-2007, 12:35 PM
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Sound like the code sometimes set with high stall converters, There is actually nothing wrong but the PCM becomes confused due to the stall RPM and thinks the 2-3 shift did not happen even though it did. I would ask your tuner to delete the test for this code as this is a comon fluke code with a high stall converter.
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Old 10-19-2007, 12:47 PM
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the thing that confuses me is that i have been driving it and this is the first time it has ever come on. does that seem kind of strange?
Old 10-19-2007, 12:51 PM
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Not really some cars show it imediatley others later and some only every once in a while when just certain set of conditions ae met when driving, Then other cars never show it at all. It is strange at times.
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Old 10-19-2007, 01:05 PM
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thanks SO MUCH for your help! my next question is this: how do i know if/when something is really wrong then?
Old 10-19-2007, 01:32 PM
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If you notice a driveability change at the same time as the light !!!!!!!!!
Old 10-19-2007, 01:49 PM
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ok that makes sense
Old 10-19-2007, 02:58 PM
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Originally Posted by big wally 55
If you notice a driveability change at the same time as the light !!!!!!!!!
Not always true. When I recieved the light and got P0757 it threw my car into limp mode. I only had two gears available. I had to turn the car off, let it sit, restart and I had all 4 gears back.
Old 10-19-2007, 03:06 PM
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Originally Posted by onyx_rock
Not always true. When I recieved the light and got P0757 it threw my car into limp mode. I only had two gears available. I had to turn the car off, let it sit, restart and I had all 4 gears back.
That's what happened to me. I couldn't figure out what code to delete so unless I'm on the freeway driving the same speed, above 50 MPH, I just leave the shifter in "D" and haven't had a problem.
Old 10-19-2007, 03:12 PM
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yep, driving around in 3(which is D in camaros) in the TA's was how to get around it happening.
Best just to have it tuned out.
Old 10-19-2007, 03:36 PM
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driving in 3 is bad for gas mileage though, right?
Old 10-19-2007, 03:43 PM
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Its worse but not that bad. Do you have any tuners in your area that can delete it for you?




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