go to auto zone to get your check engine light codes read. When it blinks that means there is more than one problem. Those codes will most likely help you figure out why your car is trying to die. I have a '98 Intrepid as well and the array of problems it has is amazing. Good luck...
Engine idling in park
Check Engine code of P0404 (EGR)
Battery disconnect or a scan tool.
No, it will not, design is much too different to make it feasable. For a 2000 intrepid you must use a 1998-2001 engine. Check out dodgeintrepid.net for a ton of info on these cars.
You will have to check in with Dodge.
You may need to replace the power control module.
disconnect battery for 30 seconds
Check the trans for codes with a scanner and diagnose the code you get.
Charging system failure:::,check alt.voltage regulator is inside engine controller
That is the check engine light, see related question below.
Check the keyswitch.
Valve clatter? Check oil level and pressure? Fuel mixture?