Hi folks,

From stop, slowly accelerating, the wagon RPMs suddenly surges when it reaches 2K-2.5K RPM marks when cold or warm. When the car gets hot, I have no surging issues even starting from a stop position. Any ideas what maybe causing this surge? Could it be a transmission shifting issue? Any assistance is greatly appreciated. Thanks!

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200 75 W115 (Mom's)
190e 90 2.6 W201
E320 95 Wagon W124
72 BMW 3.0 CSI