If you are referring to the blower motor only working on the high speed setting, then the problem is the blower motor Resistor Pack is defective. Replace it. It can be the blower motor speed control switch but not likely.
figured it out! now i have heat.
On the Dodge Ram truck, the heater fuse for the blower is on the fuse panel on top of the battery. There is also a blower motor resistor on the blower motor. The fuse to control the heat control panel is in the fuse box in the dash.
might need to replace blower motor
The blower motor is under the heat box on the passenger side of the interior. To replace it you disconnect the connector to the electric motor then take out 5 screws around the perimeter of the bottom of the blower.
it is located under the glove box,inside the cab.thereis a plastic cover over it,followed by the heat ducting.remove two separate wires(ground/pwr)remove the plastic cover(clips on)and the blower/heater motor is located there.
replace heater relay and or heater blower motor
my 1999 winstar was doing this and it was the blend door
i think what you are refering to is a blower staying on all the time, if so the blower motor has shorted the control module, you need to replace the blower motor and control module.
I would check any fuses/relays related to the heater or blower motor. If the heater fan doesn't work, could be a bad heater blower motor resistor(if has one) which are usually inline in the ductwork or out next to the heater blower motor under the hood. If the fan does work w/no heat then could possibly be a bad thermostat(stuck open) or control head.
the heater blower is going bad. just remove and replace w/new one.
Defective switch, resistor pack, or blower motor.
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Replace the Blower Resistor which is located behind the glove compartment. This is a common problem.
if it doesn't heat your heater core is most likely clogged and if it doesn't blow at all then the blower is messed up.
Connections get corroded and loose, causing resistance which causes the wires to heat up and melt.
The heat relay needs to be activated by a vaccum switch. On my van the fix was to replace the vaccum line to the relay which allowed the relay to allow heat to travel to the blower.
It was just a wire that was diconnected, go up under the dash board and reconnect it
$30 for heat/air conditioning blower motor. $50 for radiator motor. Double those prices and add labor charge if you are having someone else do it for you.
Usually if it's bad you can just turn the heat on with a medium fan speed and follow the smell of burning plastic. It should be under the dash on the right hand side near the blower motor. It has a bunch of wires going to it and 2 wires to the blower motor. Note that on many of these trucks, a defective blower resistor can burn the electrical connector. Always check the connector for signs of damage when replacing the resistor and if it's damaged, replace the connector as well as the resistor.
Dead short to ground Perhaps a bad blower motor - try disconnecting feed to blower and then replace fuse to see if it blows Could be a frayed or shorted wire to or from blower motor
I would start by checking the fuse, the relay, and the connector on the blower itself.
replace your heater core and blower motor if nothing works at all. also don't forget to drain your old water and antifreeze and replace with fresh antifreeze
My 1992 Saturn has heat until you change the blower speed what is the problem?
if all speeds do not work id say is a fuse, but if you just dropped one or two speeds. replace the blower motor resister. sells for $60.00 at the dealer.