1999 dodge intrepid fan speed switch

Check the a/c relay and related fuses

Are the different speeds working on the blower or is this stuck on just one speed ??? It seem as if the relay for the blower is fused together in the on position an can no longer be controlled by the switch. If this blower is not a relay controlled unit then most likely the blower switch is no longer working.

Need to replace the blower motor resistor.
More info, let me know.

Charlie

This is 100% the Blower (Fan) Motor Resistor located near the Blower Motor.
This is a very common problem with Chyrsler, Dodge, Plymouth. The key symptom is the Fan only working on High.
This is very easy to access and replace.

Let me know if this helped....

it a control switch on your dash

check air condition radiator

Many vehicles turn on the electric cooling fan if the temperature is high under the hood which prevents hard starting of a hot engine.
If yours never has had the fan run for a minute or two, then it isn't supposed to but if it did it once but now doesn't, the thermal switch that should turn it on has failed.
Try holding the gas pedal to the floor before turning the key; if it starts, then there was too much gasoline in the cylinders causing wet plugs which don't want to fire.

Normally i would suggest replacing the blower motor resistors but the fact the fan is still on with the controls disconnected throws me off a bit. It sounds like the 12v+ wire to the blower motor is shorted to 12v. I don't have a wiring diagram handy for that vehicle but look for a high speed fan relay. It sounds like the relay is sticking. Would be under the dash, likely above the passenger side foot well.

Yes you car has something like a resistor but its called an ATC BLOWER CONTROL MODULE.Its under the dash on the pass side close to the firewall.

Sounds like a switch issue but also had some fan relay issues