Why does my heater fan only work on a high speed and how do I fix it?

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try replacing the blower motor resistor

Why would a heater fan only work on high in a 1999 Mercury Mystique?

Answer . \nOn the Mercury like a lot of other cars, what happens is the relay for the fan control goes bad, somtimes you may just have low and high no medium but a lot of the time you just get high speed, thie is also very common on a lot of GM's.. Answer . \nThere is a resistor pack located ( Full Answer )

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. Th ( Full Answer )

How do you fix your heater-AC fan if it only works on high 4?

Answer . \nThe heater resistor pack is bad. Replace it.. Answer . \nA Blower Motor Resistor burned down and needs to be replaced. It costs about $37 from the dealer and is located on the passenger side underneath the dashboard. It is held there by 2 screws and very easy to change. Common p ( Full Answer )

Why does heater fan only work on high speed?

Defective ballast resistor pack. OTHER : It sounds like it could be the blower motor relay / resistor. I replaced mine today in my 2001 Chevy Impala. It was next to impossible since I heard that the way to get to the resistor was to remove the blower motor housing and repair it that way. ( Full Answer )

How do you fix a 1999 Metro LSI heater and AC fan that only works on high?

The blower fans on these cars run very quietly on all but the maximum setting- ensure that the fan is really not working first by holding your hand in front of the vent with the fan on low and checking that is it not moving any air.\n Answer \n. \n. \nReplace the resistor pack.

Why does the blower fan on a Prizm only work on high speed?

The Blower Resistor is probably bad. If the resistor draws too much current it burns out and the fan will only work on high speed since on high speed the resistor is bypassed completely.. On my 2002 prism this part is located below the glove box. It is usually white with 4 wires and held in by two ( Full Answer )

Why does the fan to the heater only work on high on a 96 Chevy Cavalier?

I just replaced mine on a 97 cav z24 on 01/24/09. In the passenger side, remove the bottom panel that is under the glove box. On the blower motor (its circular and black you can't miss it) look for a white plug that connects to it (should be about 1/4 of an inch away from the firewall). The white pl ( Full Answer )

Why does your heater fan only run on high speed?

Answer . \n99% of the time it is the heater resistor block, it is a bunch of resistors which gives you the different speeds.\nthis is mounted close to the heater motor, pass side of the car.\nUsual cause of failure: water or snow inside the heater housing.

Why would heater fan only work on low speed in a 1996 mercury mystique?

Here are some answers from my 99...it may be the same problem... There is a resistor pack located on the heater core housing just below the glove box. When this goes bad, the fan will only function on high. It's an easy repair. Just one screw and an electrical connection...it is called a blow motor ( Full Answer )

Why does the blower fan only work on high speed?

The blower motor resistor module is ruined and need replacement. It can be found from below and behind the glove box. Tt may be hard to see, follow the wires to connection that is mounted to the blower unit by two small hex-head screws. I removed the glove box so I could access it easier than trying ( Full Answer )

1996 Mercury Sable. Heater Fan froze. thawed now only have high speed. Can I fix this. I am not sure where to look. Thanks?

Answer . \nYou probably have water tht has entered the heater case through the cowl air inlet, which has damaged the heater blower resister assembly. It is held into the case with two 8mm screws, and is locatted under the glove box area right beside the heater blower motor. Turn on the blower an ( Full Answer )

Your 2002 Dodge Stratus ACHeater blower only works when the fan speed selector is on 4 or High Speed What might be the problem and how do you fix?

All or Nothing Blower . The Climate switch on this model is a "Resitor Switch" which means the full voltage is setting 4 ... 1-3 reduces the voltage making the blower motor go slower... This seems to be a common problem and the only fix is to rplace the switch... However the run around 125.00... ( Full Answer )

What if the fan switch on your 99' Villager only works on the High position How do you fix it?

Check the fuse There is usually a separate fuse for the regular and the max fan speeds. Check the manual or fuse box covers for the fuse location and size, then pull it and see if it is blown. merury villager and Nissan quest both use a fan resister located near th blower motor underneath the glove ( Full Answer )

How do you fix a AC and heater fan speed control knob on a 2002 Monte Carlo that has stopped working on speed 1?

Answer . Normally this is one of 2 things. Either the speed control switch is bad or the Blower Motor Resistor Pack is bad. My opinion would be the latter.. Additional Answer: . Same Issue: However, Speed 1 & 2 are not working on mine. Replace the entire A/C dashboard Controler.. Heat & Air C ( Full Answer )

My Fan Blower only works on High speed on a 1999 Dodge Caravan?

Bad fan blower . Check your switch with a voltmeter for continuity in all positions. Get the electrical schematic to your vehicle to help troubleshoot. The average fan is receiving direct voltage on "High" setting but is slightly cut down in increments on other settings by a resistor or rheostat ( Full Answer )

My fan blower only works on high speed on a 1999 ford explorer?

Answer 1 . There could be several reasons, but the most common when the fan works on high, but none of the other speeds is that there has been a failure in the fan speed control RESISTOR PACK. At the high speed setting, the 12 volt vehicle supply is fed directly to the fan motor. On all the othe ( Full Answer )

Why does a fan only work on high?

More information would be needed to diagnose your problem more accurately, but here are some tips to start: 1) Fans will not work with dimmers. If you have a dimmer controlling your fan, it will only work when the dimmer in is the full intensity position (if at all). You will need to replace the ( Full Answer )

Ac fan on high speed only?

Answer . Mine too. 1996 Chevy K1500. I found the heater speed resistor on top of the heater box behind the dash and it had a open thermal fuse inside it. I got access by removing the glove box door but found it a little difficult to remove. I just soldered a wire around the fuse as I have always ( Full Answer )

Heater motor only works on high speed in 2001 ford ranger?

Answer . Normally when a heater blower motor only works on the High setting, it is caused by a defective Blower Motor Resistor Pack . The fix is to, Replace it. In very rare instances it can also be a defective blower motor speed control switch, but rarely.

How do you fix the fan speed control on 1999 Nissan Pathfinder when it only works at the highest speed?

I'm assuming you are referring to the HVAC fan. Somewhere in the spaghetti mess of wiring going to the fan motor, there is a network of resisters. These are often mounted inside the airduct somewhere near the fan motor, not sure about Nissan though. Where-ever it is located, chances are the problem ( Full Answer )

Why 1999 Jeep heater fan runs in high speed only?

Answer . The problem is most likely a bad Blower Motor Resistor. The High setting bypasses the resistors and connects directly to the battery. The lower speeds use the resistor to lower the voltage.. Where is it?: Usually the reisitor is found behind the glove box to the left. Also the wires fro ( Full Answer )

Heater fan not working on low speed works on med and high speed?

the mortor is getting worn out some times i have took it out and cleand it out with air and elct-cleaner if that doesnt do the trick i replace it.. The blower resistor may need to be replaced. It is a small part, It is usually located somewhere behind the glove compartment.

Why does the heater fan in your 1992 Ford truck only work on high?

by the blower motor there is a resistor connection, you will find it melted . the blower motor is bad. it draws to much power causing the connection to get hot and melt and burn. you will have to change the connector and the blower motor. . the blower is still working but its drawing to much power ( Full Answer )

How do you fix heater fan speed on a 1994 continental?

Could be one of two things. It could be the head/control unit. Or, more probably, the fan resistor has gone bad. Look under the dash on the passenger side. Remove the sound insulator if it is there. Look at the heater box. You should see a rectangular flat flange with either a connector (4 pin, I th ( Full Answer )

Ford Escort heater fan no high speed?

This is a very common problem. Most often the reason that a heaterfan won't run on one of the speeds?æis corroded contacts in thewiring harness.

Honda Odyssey heater fan only runs on high speed?

There are multiple causes as to this condition. There may be a bad switch that is stuck on the high position. The motor itself can have a problem being regulated correctly, for example also.

How do you fix a 1998 Nissan sentra heater blower motor that only works on high?

from the basics you're giving, sounds like a bad switch. The cheapest and easiest fix is to go to the library, pick up a hanes manual, study how to remove the climate controls. Grab your tool box and go to a you-pull-it junk yard. Pull the part on a crashed car to give you practice with your own. Th ( Full Answer )

How to fix Dodge Dakota heater fan when it stops working?

first check if you have power to motor. Key on & switch on.Check if you have power at connecter at motor. If power at the motor-replace motor. No power then check the resistor, The resistor has to have power to it & out of it to motor motor at all 3 speeds. Don't forget to check you fuses first. I h ( Full Answer )

Sierra heater fan does not work on high?

could possibly be the blower motor resistor. which is generally located on the passenger side under the dashboard by the blower motor.

Why does your heater fan in your dodge 1500 van only work on high?

Your heater fan only working on high is probably the little coil sensor heater assembly located under the hood, it will be on the far left side of vehicle if your standing in front of it on the side of the air plenum. There is two screws holding it into the plastic chamber and a wire harness which y ( Full Answer )

Why does Heater fan not work on high speed?

2004 Chevy express van, heater has no high speed, at one time the blower stayed on even when the ignoton was turned off therefor draining the battery,

98 GMC pick up heater fan only works on high?

Usually when the heater only works on high it is because the resistor has went bad. The resistor is what put resistance on the fan to make it work on low, medium, and even off. Since the resistor is bad it only works on high because there is no resistance needed. The resistor part you need should no ( Full Answer )

Why does the heater only work on high?

If your talking about your blower motor only working on high its usually your blower motor resistor that has stopped working properly. (The blower motor resistor is an electrical component which limits the flow of electricity to your blower motor, allowing it to spin/blow at different speeds). It is ( Full Answer )

Why would a heater fan only work on high in a 2001 Lincoln Town Car?

Blower motor resistor is right, reason; The resistor is composed of three individual coils to control current flow. when one of the coils burn out. The current bypasses these resistors and only flows from battery voltage, to motor, to ground......

Why is your heater fan running on high only?

because u need need to get a different motor right now if it only runs on high the nyou have a one speed motor witch is gonna be on high full time if u change your motor to a 3 speed motor then you will be able to change the speed of the motor from the thermastat one hour a/c and heating lead tech. ( Full Answer )