Ever since i've owned my 91 yota it has had this annoying jerk when it shifts into overdrive. It's not overly harsh or anything and doesn't always do it but it's not somthing that i isn't normal either. Does anyone know what could be the cause of this problem. After a little research on here i greased the slip yoke but it's still there. Also if i'm accelerating pretty hard or if i back my foot off the accelerator before it shifts into OD it doesn't do it...THANks for any help

 

not sure if this is what you are experiencing, but when a tranny starts to fail, the OD is the first thing that starts acting up

 

Maybe the shift solenoids? I'm not yet an expert on transmissions yet but that's what I am thinking.

 

I think I have the same problem, when it finally shifts into OD the tranny "kicks" into gear. I think it's just time to rebuild the tranny...I have almost 200k miles on it. I think I might try to rebuild it myself since I'm learning about rebuilding trannys at school right now.

 

Ah...I see ur from good ole laramie wy...drivetrain class at wyotech right? rebuilding the 4t60e? I just graduated from the laramie campus this past december and am now doing the ASM online thing to get my associates...have you been offroading at medicine bow yet or is all of it closed for winter?

 

Yeah we did that for a project in my class here at Greenville Tech for General Motors. It was fun. Our project was a PITA because it was a Dodge transmission and all I've ever worked on were GM's Turbo 350 and 400, 700R4, 4T65e, 4L80e, and the Allison trannys. I cant wait until I am good at it then I will be making the $.

 

Guilty as charged...I took the entire diesel program and then came over to auto for EMS 1 and drivetrain. 5 WEEKS TO GO!!!!!! In fact, I was just up playing around on the FS roads off of happy jack this afternoon. There was a little bit of snow up there and a couple of deep drifts I didn't think I would get through, but my Yota's tough. I'm not even going to try any of the roads up near snowy range!