There are several possibilites. You need to take your car to a tune-up shop and have it diagnosed.
Because its a Chevy corsica not a ford corsica!!!!!
start with wires
Corsica , neon , station wagon , Ford 150, semi truck
ford is them work and they are fixing them 2 work better
Gerald Ford
P0300 - Random Misfire . P0300 indicates multiple cylinders are misfiring or the PCM cannot identify which cylinder is misfiring .
my 2002 ford escape sensor is misfiring and it won't shift into drive
Check radiator fan control relay.
On a 1995 Ford Explorer : No ( at least my 1995 Ford Explorer XLT doesn't )
Check all the spark plug pockets for water or coolant. They should be dry.
There are any number of things that can be wrong. I would take the car to a reputable repair shop as this can be a rather intensive operation and then sometimes you never find what the problem is.
What is the max towing capacity of a 1995 ford