19stang88

When i am driving and i put it in 3rd gear my steering wheel and front of the car shake a lot, but once i shift to 4th the shaking is gone. I Have new motor mounts and trans mounts. Also, When i am driving above 80 mph my car shake very bad, i don't know if its the fact that i am going over 80mph or my car has a problem. Any suggestions would help. Thanks

atwood1

just to get some of the small things away i would balence all 4 tires and have ur rotors checked they could be warped does it shake when u hit the brakes

tohoopty

do what was stated above

94ford5liter

Sounds very similar to the problem I just had. Check out your harmonic balancer. See if its wobbling real bad or if the rubber has come off. The rubber came off mine between the outer weight and center section so I basically didn't have a balancer. Car shook pretty bad above 80, at startup, and under any kind of load or high rpm.

19stang88

yeah my car shakes when i press on the breaks. and my harmonic balancer is wobbling a bit

94ford5liter

From my experience that is one of the only sources of major shaking on these cars. If your balancer is bad your engine is partially out of balance or in my case I pretty much had no weight to balance it. Things like motor mounts going out and tires being out of balance can cause shaking, but usually not major in most cases.

PRO50SC

Start w/ having the rotors resurfaced/replaced and the tires balanced. Go from there.

Jfsram

Before you start "guess". Narrow down your search.

If this is occuring at the same speed but in different gears. This says it's engine/flywheel related.

Ingore the gear and note the rpm. If it is the eng/flywheel, it should also vibrate in any gear at that rpm. Even nuetral.

Liquid_02

To check the balancer just use a timing light. Just hook it up and check your timing, if your mark is nowhere to be found, you've spun the balancer. You can usually tell by looking at the rubber as-well. If it's broken, chances are your balancer has spun, but not always. Timing light is the best way.