solenoids

I have an LX, engine starts and runs great, shifts smooth in and out of Drive, Reverse and Neutral. When driving after second gear it goes into neutral and then shifts back into second gear once RPMS are low enough. I have changed solenoids, checked wires for resistance, have a new PCM, and...

So my car is pulling a p0660 code and will not stay running for longer than 2 minutes. Basically the engine just chokes out. From everything i can gather online it has something to do with the shutter valves staying closed. And can be a simple as changing the VICS solenoid pack that sits on top...