When you say the engine jumps, is it reving high before it goes into reverse?
If so this is a common problem on satty automatics. Most refer to it as reverse slam. There is a possible easy and relatively inexpensive fix. There is a valve in the valve body that gets stuck. If left unattended it will require a valve body repair or replacement.
If the engine is not reving it is possible it is a bad mount. Very unlikey tho. The engine would jump every time not just cold.
Let me know if you want the procedure and I will either post or pm you with it.
Satty trannies should have there fluid changed every 30,000 miles. Use mobile 1 synthetic tranny fluid also. It works best in these trannys.
Good luck and let us know. :)
PS, Mom taught both me and my dad how to drive. Grandpa was a trucker and Mom could drive anything!
Monday, April 23rd, 2007 AT 9:26 PM