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Why does the fan work only on high and keep blowing resistors on low?
Wiki User
∙ 16y ago
Had one that the fan motor was going bad Was burning out resistors with high draw
Wiki User
∙ 16y ago
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How can you fix a heater and AC fan that only work on high?
Resistors control the speed of the AC/Heater fan. These resistors are switched on and off in various combinations to create the different fan speeds. When the resistors burn out your fan will only work on the "HI" setting. The "HI" setting doesn't use any of the resistors and that's why it works. These resistors are near the blower and the blower is beneath the dashboard on the pasenger side. Just have to located resistors now.
Why would the heating-AC fan on a 1994 Dodge Caravan only run on high?
Resistors control the speed of the AC/Heater fan. These resistors are switched on and off in various combinations to create the different fan speeds. When the resistors burn out your fan will only work on the "HI" setting. The "HI" setting doesn't use any of the resistors and that's why it works. These resistors are near the blower and the blower is beneath the dashboard on the pasenger side
Why does my Ford f-250 blower only blow on high?
more than likely the blower motor resistor is out. it uses resistors to reduce the voltage sent to the fan to make it spin slower when the resistors go out on low and med your are left with high witch is battery voltage 12v.
How do you fix the heater in Mercury Sable - Ford Taurus?
No one knows if:The heater is NOT blowing - or blowing on high speed only, or... The heater IS blowing, but the air is NOT hotEither way, the "Related Questions" below will get you started
What would cause the AC and heat to only work when switched to the high position?
AnswerYou have identified the problem when you state that it only works in the high position. Your switch has variable speeds, it contains resistors that control the speed of the fan, for both AC/Heat. These resistors are burned out/or the connector to the resistors has become unplugged. The resistors are located in different locations so please get your auto manual to locate there position, and verify there operation.Most cars have a simple blower motor resistor that provide the low-medium speeds. If it burns out the fan defaults to high speed - the most safe 'default'.Walk into any auto parts and tell them your car only blows high and they'll immediately know what you need.In most Ford vehicles this is a 10 minute, 2 screws procedure that most anyone can handle.
If my cab heat and ac fan only works on high setting is it bad relays resistors or motor?
AnswerI think it is the switch or the wires. Actually it would most likely be the resistor motor is shot, if the blower motor only blow on high there is no resistance thus it will only work on high.
You keep blowing the brake light fuse in your focus?
Are both your brake lights blowing out? If it affects only one light: it could be a bad light socket, or a pinched or frayed wire that is shorting out.
Why does my heater only work on high setting also makes noise and shakes dash?
if it only works on high it means the resistors are open and if it shakes it probably has a broken fin in the rotor or some foreign object in there causing unbalance hope this helps you
Resistors which have only one ohmic value are called?
Fixed
How do you use whistle in a sentence as a verb?
I whistle when I'm scared.Sometimes, I whistle but only make a blowing sound.I whistle to keep a good mood.
Why does the ACHeater blower only run on high in your '96 Chevy Cavalier?
Blower motor resistor is bad. It is a little circuit board with resistors on it that changes voltage to the blower motor. When it goes bad, you get full speed only.
Why is your Camry only blowing air when on high?
Because the air blower switcher was worn off for all the switch positions but high. It's cause by the fact that people usually don't use the high setting
