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Why does the heater fan on a 1993 f150 only work on low speed have already replaced blower motor same result?
Wiki User
∙ 14y ago
You have a bad blower motor resister..........
Wiki User
∙ 14y ago
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What is the cause of a fuse blowing on a 1995 Chevy Corsica as a result of using the heater or air conditioner?
It really needs to be checked out but it probably is the blower votor.
What can cause a heater to stop blowing heat?
well you could just turn the heater off heater blower ---- If it is a car heater then check your coolant level. the heater is driven off a heat converter that is fed by the radiator system. When the coolant fails to pump round the radiator system the car internal heater doesn't work. Driving without coolant in the system will result in the engine overheating and seizing.
Why have i no heating in my fiesta 1993 model?
Typically, a heater failure in any car is the result of a bad thermostat. This is usually easily replaced (check a Chilton's manual for your model vehicle before you pay to take it to a mechanic). If the thermostat has been replaced and the problem persists, it could be a blocked heater core, which will require the assistance of a mechanic.
Theories are sometimes replaced as a result of new?
why are theories sometimes replaced by new theories
What can result if calcium is not replaced in bone?
Osteoporosis
How do you change a blower motor resistor on a Pontiac grand prix 98?
The blower motor is a variable speed motor. The higher the voltage applied to the motor, the faster the speed. Depending on the HVAC (Heater Ventilation Air Conditioning) option installed in the vehicle, blower speed control could be through a set of resistors or through a solid-state blower motor control module. Battery voltage to the blower motor is supplied by the heater & A/C control by way of the blower resistor (or blower motor control module). At low and medium speeds, the voltage is stepped down by the blower motor resistors. At high speed, the blower motor relay is energized, removing the blower motor resistors from the circuit. Battery voltage is then applied directly to the blower motor through the relay. The motor will then run at maximum speed. Several types of HVAC systems were available on these vehicles, from manual to fully automatic electronic control. The blower motor speed can be adjusted manually by pushing the fan switch up or down or automatically by placing the heater & A/C control in the AUTO mode. In general, this system is reliable. Because so many of the control operations are electronic, special diagnostic equipment really should be used for system diagnostics and check-out. An authorized technician using a scan tool can most quickly locate HVAC problems.An inoperative blower motor could be caused by the following: Blown fuse(s). The fuse should be replaced. There may be both a LOW BLOWER and HIGH BLOWER fuse. Some models may also call it the HVAC fuse. Even the RADIO fuse is used in some applications. Check them all. If a fuse is blown there may be a short to ground in one of the power supply circuits. Open Circuit. Check the circuit between the ignition switch and the blower motor, and the blower motor ground circuit. Repair as necessary. Faulty blower switch. A faulty blower switch should be replaced. Most heater blower circuits also include a blower motor relay (look in the underdash convenience center), as well as a blow motor resistor. These items should be checked especially if the blower runs in one or two speeds, but not all speeds selected. REMOVAL & INSTALLATION Disconnect the negative battery cable. The blower motor is located on the passenger side of the vehicle, under the instrument panel. Remove the right side sound insulator (trim panel) by removing the retainers and disconnecting the courtesy lamp. Detach the blower motor electrical connector. Some applications may have cooling hose to the motor which should be disconnected.Unfasten the blower motor mounting screws, then remove the blower motor from the vehicle. If the blower motor fan (also called a 'squirrel cage') must be replaced, use the following procedure: NOTE Do not hammer on the motor to remove or install the fan. Do not apply force to the motor housing to seat the fan on the motor, or motor/shaft bearing damage could result. Do not apply pressure to the fan rim. Be sure the correct replacement part is used. Remove the metal star clip retaining the fan cage to the motor shaft. Remove the fan by pulling straight out. To install: If removed, install the blower motor fan, as follows: Install the replacement fan cage onto the motor shaft. Adjust the fan cage to get a clearance of 0.30 inch (7.5mm) to the motor mount plate. Install the remaining components in the reverse of the removal procedure. Make sure the electrical connection is secure. Tighten the motor screws to 14 ft. lbs. (20 Nm). Connect the negative battery cable, then test the blower motor for proper operations
Blower on 1994 GMC Jimmy only works on settings 1-2-3 not 4 Replaced switch and got same result If it is the relay to this switch where is it located?
there is a blower motor resistor in these, read up on it everyone should have a manual for their vehicle, and the library should have a professional shop manual available in the REFERENCE section...make copies of the right sections...good luck :)
What size fuse do you need for the heater blower on a 1989 Chevy S-10?
its a 10, most likely its going to be red,
Where did the Irish coffin ships go to?
Because many people were already sick when they got on them as a result of the famine and many died while on the ships.Because many people were already sick when they got on them as a result of the famine and many died while on the ships.Because many people were already sick when they got on them as a result of the famine and many died while on the ships.Because many people were already sick when they got on them as a result of the famine and many died while on the ships.Because many people were already sick when they got on them as a result of the famine and many died while on the ships.Because many people were already sick when they got on them as a result of the famine and many died while on the ships.Because many people were already sick when they got on them as a result of the famine and many died while on the ships.Because many people were already sick when they got on them as a result of the famine and many died while on the ships.Because many people were already sick when they got on them as a result of the famine and many died while on the ships.Because many people were already sick when they got on them as a result of the famine and many died while on the ships.Because many people were already sick when they got on them as a result of the famine and many died while on the ships.
Why when you turn on the heater comes up a bad odor?
This is a result of dust and other debris that has accumulated on the coils or in the heater. When you turn it on, it begins to burn off and that is what you smell.
Pontiac grand am no heat?
Low water in the radiator will result in no heat. The water level is not sufficient to reach the heater core. The heater core will become cold.
What happens when glutamate is replaced by valine?
sickle cell disease will result
