Shakes while in reverse

Hey LUKE LUGNORE,

First make sure the transmission fluid is to the correct level to rule this out.

It sounds like a bad motor or transmission mount to me.

With the park brake on if you can get someone to watch the motor whilst you change from D to R do you see excessive movement? If you see the motor shift a significant amount I this points towards a bad mount.

You can then visually inspect the mounts for damage.

You should see a motor mount on the passenger side of the engine underneath the coolant expansion tank. Check for signs of oil leaking around this mount. I believe this mount is fluid filled and would cause vibration if the fluid has leaked.

Hope that helps.

Regards, Joe

Hey LUKE LUGNORE,

What gear were you in when you brought the revs up with your foot on the brake? Have you driven it and now everything is working as it should?

Did you check the motor mounts?

Regards, Joe

Hey LUKE LUGNORE,

If it now drives well and shifts correctly I really would advise you recheck all of the motor and transmission mounts.

Some engine mounts are fluid filled (I believe the passenger side top mount under the coolant expansion tank is on these Mazda's) so you will see a stain around the mount if it has gone. Other wise it will be just a rubber mount, carefully move the mount with a pry bar. The mount should have resistance a spring back to the original location. You should not be able to get the two isolated metal parts of the mount to contact when doing this.

Hope this helps.

Let us know if you find anything.

Regards, Joe