There are many possibilities, the only way to know for certain is to use a code scanner. A 98 might be able to connect to an "OBDII" code reader. You can probably borrow, rent or buy one from a local auto parts retailer. If you borrow one you can figure out what's wrong and buy the parts right on the spot. Often it's something as simple as an Oxygen sensor. Whatever it is, the computer already thinks something is wrong and that is why the light is on.
Yes, idling in park.
3.3
yes,
I have a 96 Plymouth breeze with 2.0 engine. Highway 44 mpg, city 36 mpg.
No
how do you change a timing belt on a 1998 Plymouth breeze 2.0 liter engine
Check the coil pack or the cam position sensor
Yes
You can replace the timing belt on a 1998 Plymouth Breeze 2.0 engine using a Harmonic Balancer Puller 5.
Interference
Engine and trans out the botom at the same time.
YesYes