Okay! we just did a timing belt change, right now the engine start fine, but the engine shake or vibe around 2k-25k rpm (with ac on, while car in park) then with the engine moving you could feel it around 50-60 mph?
So, I'm thinking it's the balancer is off, but I did it according to the book, the front balancer is lining up to the oil pump while a top marker is linning to the marker also, the back balancer we stick a screw driver in the service hole to hold it in place, I also saw some marker on the back balancer gear but the book did not say anything about it.

 

up!

anybody? did I install the timing balancer belt wrong?
Timing line up with the cam and crank line with the arrow with the timging gear and crank pully line (white line) with the timing marker on the belt cover?

 

There is what's called an adjusting pulley that the crank belt needs to go around (its the silver looking circular thing with the smooth silver outside). There is a metal piece that connects to it (looks like a circle with a bar coming out of it). Anyways, there is a little plug on the block that it connects to. Make sure its connected.

Also, the manual will tell you that .010 in is where the valves should be set. I find the car runs smoother if you set them at .08 in.

Please tell me you did a valve adjustment after you put the belt on, right?

If none of that stuff checks out, try looking at your engine mounts and see if they are good. You have 4 of them. One in the front, one on the right, one for the transmission and one in the back underneath the intake manifold.

 

any other ideas, the car wasn't shaking until after the timing changed.