I am encountering a rather strange problem. Regardless of what gear that I am in when my car deaccelerates and the tach is @ 3000 rpm the car surges and jumps. Then when around 2800 it stops. It is weird b/c it is only happens @ the 3000 mark. Any ideas on this one guys?

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1994 E500 (MY SUNDAY DRIVER)
1993 190E SPORTLINE LE W/ M104 SWAP
1997 C230
2002 ML320
2000 BMW 528I (WIFEY'S CAR)

"Excuses are crutches for the unfounded."