98 Camaro For Sale
Recently did a 4L80e swap in my 98 Camaro. The car originally had a T56, I am running into tuning issues so it seems, I need some help with this as this has been puzzling me for some time.
I did the Delphi 411 repin with the ECU and O/S from a 2002 Camaro running the fuel segment and 4L80E segment swap. The repined wiring to the ECU has been checked by an auto electrician and deemed OK. I am running the Speartech harness for the control of the trans and the trans shifts from the ECU. It changes at part throttle but does tends to hold gear a bit but will not change at WOT till I back off otherwise bouncing off the rev limiter. I am lost to why I am having this issue.. I have tried several F body 4L80E transmission tunes from the old repository and even did a segment swap from a silverade of the same O/S with no success
My problem is no WOT 1-2 shift, it just hits the limiter, I am unsure if I have the same issue 2-3 as I have not tried that one due to the speed required on the public road. I have altered the change points down gradually to ridiculously low values even zeroing out the MPH and dropping the RPM right back to below 4000 rpm with no success.
I was considering trans oil pressure as a likely culperate though the transmission had been done up with the new transgo kit, till I found an old post in the forum dated from 2015 from a guy who had I identical issues and had done exactly the same conversion minus the repin to an 02 TransAm, he was told to use the 4L60E segment as a fix, the forum finished there. I tried this, a bad choice. I had reverse and neutral but slipped terribly to the point it was un-drivable and risked damage.
I have previously replaced the front VSS and both shift solenoids.
I am running a Hughes Hi stall converter and an automatic Transgo shift kit. I am currently running the LS1 which is stock till I sought out the issue
Can anyone help with this one please
98 Camaro Auto Tune Cam Swap Shop
98 Camaro Auto Tune Cam Swap Shop
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