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4L80E problem over 6000RPM 1-2nd shift Please Help!!
Hi I have a 1989 Caprice with a 2008 6.0L LY6 with a LS3 cam / 4L80E with transgo hd-2 shift kit the car was tune on a dyno but I?m having problem with the transmission, when I make it shift from 1st to 2nd gear over 6000rpm it seems like it goes in limp mode:banghead:. In scanner mode you can see that the accelerator pedal is at 100% to whole time but the throttle position start to drop and you can fell the limp mode and then shift in 2nd gears , but from 2nd to 3rd I can shift it over 6000rpm without problem:yay: . Also I?m having problem with the throttle response it seems to be slow under 4500rpm
thanks