I have on and off speed for heater fan. Was told there is a fuse blown. I have no owners manuel ,and was looking for help on what fuse it might be.

U blew a fuse look at your Manuel and find the blown 20 amp fuse Regards Chris

Sad to read this so late, but, anyhow. If the fan Works on higher speeds but not on lowwer ones, it is NOT a fuse, but the speed control RESISTOR! Find a higher wattage rating resistor of the same resistance (Ohmic) value and replace. Sometimes dirt and lint block the resistor from airstream keeping it not so hot, and then it burns... so clean around its location. Best luck, Amclaussen.

David I dont have th schematics for your fuseblock layout for your vehicle but when I am having problems with a component in my vehicle I use a pair of pliers or a fuse puller and pull all of the fuses one at a time and check them for being blown. If I find a blown fuse I replace the one blown with the same size. If you are having problems with the fan motor I would suggest that you find where the wires hook up to the fan and check them for 12volts using a volt meter. If you have the voltage chances are that the motor in the fan is no good. Hope this helps

The heater and AC use the same fan to blow air.If the heater works I would check for a blown fuse for AC look in owners manual for location

check the blower motor fuse, then you can turn truck on put the speed control to high. if fuse is blown replace fuse, if the speed control only works on high, the blower motor resistor needs replacing. It is on passenger side under glove box in close proximity to the blower motor. The fuse is under the hood on driver side. the cover should say fuses/relay on the top of cover, on most ford vehicles you will need to look in the owners manual for the position of the fuse.

The fuse will only be for the heater fan and that fuse must be in the main fuse box. The position of the fuses is normally marked on the inside of the fuse box cover and also in the owner's handbook. If you don't come right with these, work your way through the fuses looking for a blown one. To ease your search the wiper fuse, should be around 20 to 30amps.

The fuse must be in the main fuse box. The position of the fuses is normally marked on the inside of the fuse box cover and also in the owner's handbook. If you don't come right with these, work your way through the fuses looking for a blown one. To lessen your search the fan fuse (Heater)should be between 25 to 30 amps.

what has most likely happened is that a fuse has blown that is in your blower fan circuit. Check your owners manual, and see if there is a fuse to that system, if there is, check and see if it is blown. If it isn't, then the problem could either be your blower fan itself, or your blower motor resistor. Generally, when the blower fan goes bad, no speeds of the fan work. When the Blower motor resistor goes bad, usually only 1 speed of the fan works. Try the first suggestion i gave, and it everything checks out in the fuse box, then try all of your fan speeds. If one works, you need a blower motor resistor, if none work, then it is most likely your fan. Let me know how it goes and i'll do my best to assist you further. good luck.

open hood,look in main fuse box for blown fuses,or bad relays to heater fans. the a/c fan should come on only when you turn a/c on at the dash panel only. it has nothing to do with the heat. if the heater blower fans don't come on, then look in the main box[fuse] for a blown fuse also. otherwise the problem is in the heater control module.[where you turn on a/c and the heat] that panel has a different fuse location.under the dash drivers side or on panel on drivers door at the door jam[where the door shuts towards the front of car,under mirror,but inside] look for fuse panel there also for blown fuse. hope this helps,but if not,recommend you seek a pro.such as cadillac

check under hood in black box usually found on driverside fenderwell. will have relays @ fuses.