94 lt1 PCMforless tune and 4l60e problem please help!!!
#1
94 lt1 PCMforless tune and 4l60e problem please help!!!
ok, i have a 94 formula with pretty much all the bolt ons. it has a pcm for less tune and runs excellent. recently i blew the stock 4l60e tranny and had it rebuilt the tranny now shifts perfectly hard in all 4 gears at normal driving rpm, but at WOT it will not shift into 3rd gear, it will bounce off the rev limiter and slowly go into 3rd if i let off the gas. i took it to my tranny builder for warranty work and they ran the tranny through all the diagnostics and deamed the tranny in perfect working order. they then told me it was either my throttle position sensor or my current tune.
any advice?
thanks guys
any advice?
thanks guys
#2
TECH Senior Member
iTrader: (36)
ok, i have a 94 formula with pretty much all the bolt ons. it has a pcm for less tune and runs excellent. recently i blew the stock 4l60e tranny and had it rebuilt the tranny now shifts perfectly hard in all 4 gears at normal driving rpm, but at WOT it will not shift into 3rd gear, it will bounce off the rev limiter and slowly go into 3rd if i let off the gas. i took it to my tranny builder for warranty work and they ran the tranny through all the diagnostics and deamed the tranny in perfect working order. they then told me it was either my throttle position sensor or my current tune.
any advice?
thanks guys
any advice?
thanks guys
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#8
TECH Senior Member
iTrader: (36)
https://ls1tech.com/forums/automatic...kies-here.html
It even includes a thread with tips for removing your trans and installing a new converter.