a bad blower motor resistor heat normally used on medium and high medium usually burns out those speeds first till only high is left normally located right back under glove box on heater box/core line usually 20-40$
Temperature blend door motor likely defective. Default position is high heat.
ok,so you need to know what is the bolt pattern for a 1999 neon. 1999 Dodge Caravan 5 lug 4.5 inch or 114.3mm High Positive Offset
Trouble code P0007 means: Fuel Shutoff Valve Control Circuit High
Trouble code P0004 means: Fuel Volume Regulator Control Circuit High
By doing this the engine has a high ratio of working but, the transmission also has a high possibilty of not working so, my thoughts are to just change the engine not the transmission.
On the upper dash panel between the turn signals.GLDean
Replace heater motor resistor.
According to my chart, IAT circuit high.
The cast of High Heat Baseball 2000 - 1999 includes: Cal Nguyen as Baseball Players
the 1999 wrangler's heat only worked on high,but now it don't work at all.
The radiator fan is probably not working.
Trouble code P0073 means:Ambient air temperature sensor circuit high input