1996 e40d slipping 1 to 2nd when warm.

521turbo · Aug 20, 2012

I did the sonnax vavle and springs shifted great. Then one day it just started slidding into gear from 1st to 2nd then the rest of the gears shift fine. But it only shifts like that when the trans is above 140 degrees.

MossBack · Aug 23, 2012

Mine does too but the 2-3 shift under light to mid throttle. I have determined that it's the quality of transmission fluid . As I admittedly bought Walmart brand when I did my tq and it was ok for 2 months now it's shot. Going back to AMSOIL ATF as it ran good for a year until it broke down and I assumed it was my torque converter.

I am adding a shift kit soon so that's when I am swapping.

I would check it and consider better ATF now that it's used under higher then stock pressure .

521turbo · Aug 23, 2012

I put some atp shutter guard in it now it shifts good. That stuff works good its in a little red tube. I did use Advanced auto fluid.

MossBack · Aug 23, 2012

I use the lube Gaurd in the black bottle and Lucas stop slip. As I said it was ok with AMSOIL then when I should have just changed it I started adding additives and have to every other month.