Just replace the door jamb switch on the drivers door. It's normally a bit of black accordian rubber that sits on the car side of an open door. https://images.app.goo.gl/m2VLGnTkv5ty5A... When door is closed it presses the switch telling the car the door is closed. You can test it yourself to see if it is the switch by pressing it in Very cheap part from an autostore

Check the position of the camshaft sensor. Sounds like it might be loose and not registering when you accelerate. Tighten it or even use some cloth tape to fasten it. If that works then make the adjustment a little more permanent (e.g. gasket maker or some sort of adhesive)

I don't know how old these questions are but for anyone in the future reading this. You have a blown brake light or faulty brake switch. Replace the brake lfirstlightsand while your at it replace the turn signal bulbs. If this doesnt fix (it will) check brake switch located at the brake pedal. This should be done last…. You're welcome.