Surges (heavy jerks) when shifting between 1st and 2nd gear

"Two things to check for simple fix.

1. Is the transmission fluid at the correct level and in good condition? Is the color of the fluid a clear, light red color?

2. Examine the engine and transmission for loose or damaged vacumn hoses.

Both of these can cause hard shifting.

You could of course take the car to a mechanic who can connect diagnostic equipment and tell you exactly what the problem is.

Transmission problems rarely fix themselves and the earlier you do something about it, the cheaper the repair."