About 90% of the time when I shift into Drive the car jerks/slams and I can't figure out what is causing it? Bad engine mounts? Transmission mount?

Thanks!

 

sounds like the idle is too high

 

Every third gen I've ever driven gives a very noticeable buck going into drive which usually involves the car rolling forward an inch or two. It's especially noticeable if you've been driving some underpowered econobox lately.

Might as well check your transmission mount, they break a lot.

 

Thanks, I'll check. BTW - i've been driving a 99 saturn back and forth to work for the last couple of weeks at 30 mi per gallon...definitely an econobox...