85 S10 2WD Ext Cab shakes in overdrive

[doubleb's69]

I have an 85 S10 and when it goes into overdrive it shakes. I wondered if anyone else here has experienced this and what they figured out? I would post pics of the truck but haven't been able to since the site was revamped or whatever happened.

[Indian113]

Is it a auto? If so you could have torque converter problems.

[doubleb's69]

Originally Posted by Indian113

Is it a auto? If so you could have torque converter problems.

Funny you should suggest that. I took it out today and got it on the highway. When it started shaking I tapped the brake pedal and it would quit the shortly thereafter start again. Tap the brakes and it would quit again and so on. I figure it is the torque converter and when I hit the brakes while shaking and it stops it must be unlocking and then relocking causing the shake. The u joints all seemed tight as well. Thanks Ray.