Mr.FormulAtor

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

ss.slp.ls1

iTrader: (36)

Sounds like stall wall...did you install a higher stall when you got your trans rebuilt? You should have.

myltwon

iTrader: (1)

obd1 is common to have stall wall issues, I know mine did

355z28

iTrader: (8)

Mine was doing the same thing, oddly enough I cleaned the Mass Air sensor and the problem went away.

Mr.FormulAtor

its a stock rebuild. do i have to buy a new converter?

ss.slp.ls1

iTrader: (36)

Stock rebuild on the trans, but did they reinstall the same stock converter? You don't need a converter, but a higher stall and a trans cooler will really wake up the car.

Mr.FormulAtor

hm i have a oversized transcooler installed already.. im new to automatics. how do i change the stall? and yes i installed the stock converter

ss.slp.ls1

iTrader: (36)

You have to drop the trans, tha's why I said you should have put in a new stall when you had your trans rebuilt. Read up hear and you'll learn a lot about automatic trans and stalls.

https://ls1tech.com/forums/automatic...kies-here.html

It even includes a thread with tips for removing your trans and installing a new converter.