Inside the transmission, on the valve body.
A dodge neon does not have a heater valve. The inside temp is adjusted with an airflow control door inside the dash.
Your local Chrysler dealer would be the place to check.
If you are looking for a modulator valve, it does not have one. Dodge does not use them.
the seal on the valve cover needs to be replaced. my 2000 neon had the same problem. I replaced the seals in the valve cover and it fixed the problem. The kit came with the seals for the spark plugs.
Attached to the valve cover is a hose on the driver side. Unscrew the nut closest to the valve cover and that is the PCV valve. It is a straight PCV valve, not the elbow shape you may be looking for.
no a 2001 dodge neon motor will not work in a 2000 neon
If the light is on, it will need checked and diagnosed.
Doesn't exist on an 02 neon
It is about 50% possible for the valves to hit the head on a Neon. Sometimes it does, sometimes it doesn't.
The 2000 Dodge Neon is a OBD 2 port