The converter isn't unlocking when you stop. It is the same as leaving the clutch out and trying to stop a vehicle with a manual transmission. The brakes will stop the vehicle and in the process, stop the engine unless the clutch is depressed. Speak with your mechanic. I believe there is a lockup sensor on the transmission that could be bad.
As far as the shift solenoid, it will cause irratic shifting. If clearing the codes corrected the problem, you are lucky. If the problem reoccurrs, replace the shift solenoids.
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Wednesday, October 14th, 2009 AT 12:43 PM