I assume your talking about the engine fan, not the cabin fan. The engine fan is designed to come on only when the engine gets hot enough for it. I.E. the fan won't turn on in the dead of winter, or if you just start your car. The fan will turn on whenever the A/C is turned on though, as part of the Air cooling system.
no a 2001 dodge neon motor will not work in a 2000 neon
Where is the oil sending unit on a 2000 dodge neon?
A 2000 Dodge Neon does not have a maf sensor.
how to remove a door lock cylinder on 2000 dodge neon
A Dodge Neon does not have a mass airflow sensor.
yes the dodge neon have fuel injection
The 2000 Dodge Neon is a OBD 2 port
(possibley) but most likey NO
Not without modification.
No it will not the 2000 neon was a totally new design for the body and it won't line up correctly you need a bodykit for a 2000-2003 neon to fit best.
the spark plug gap for a 2000 dodge/plymouth neon is 0.035 the spark plug gap for a 2000 dodge/plymouth neon is 0.035
if you can get a copy of the Haynes repair manual, Dodge Neon 2000 thru 2003. Book #30036 it can help with the answer.