2009 Toyota Corolla Stalling out

I have a similar problem with my 1997 Corolla. The origional message is posted below:
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Engine shuts off at high way ramp and toll
Hi!
I have a Toyota Corolla 1997. Mileage is 55K and the car runs like new until recently a specific problem keeps happening. When I slowed down for the toll or get off the highway, the car engine shuts off all of sudden. It does not happen every time, but has happened 4 times within a month. I would be able to turn the car back on only if I push the gas paddle gently. Without the pumping some gas, the car would not start. This problem only happened when I slowed down from the highway. Driving within the city is not a problem at all, even when I stop at lights for any period of time. I have never have problems starting the car, either.

I do not know if it has something to do with the PCV valve. My mechanic changed recently, the new one is not Toyota brand. The problem started after the change.

Any clue would be greatly appreciated.

Thanks,
Posted by: eyigit
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Please post if you learn the problem. Thanks.