check your tires they mite be off balance are you have a u joint problem
i ain't no expert but might be the head gasket.
Bad tire, rim, u-joint,......
could be a problem with your transmision, having trouble shifting
major vacuum leak?
Check into a new steering dampner, it's a common cause for shake at speed in a Jeep, but it could also be alignment or balance.
This will tell you how: http://www.markviii.org/LOD2/keyless_entry.htm
The Shake It Up Make Your Mark competition is in Hollywood.
The Shake It Up Make Your Mark ends on August 3.
Follow the tubing from the master cylinder and it runs into the proportioning valve.
Look up American Air Suspension on the internet
u probabily need an alignment u probabily need an alignment
John Wilks Booth shot president lincolin