Also as I suspect the light may get brighter in the defrost position if it does start wiggling the wires on the back of the control unit and blower door actuators expecially the defrost one and see if bulb gets dimmer. There is a little box behind the passenger headlamp. If there is voltage: If there is voltage but the motor doesn't turn, disconnect the plug and connect one of the motor's terminals to a good ground and the other to a 12-volt fused source. Thanks, -Nigel Try the blower motor relay. It is fairly common for these wires to chafe through the insulation and break completely or short to ground when the shift lever is moved into certain positions. The blower always has a positive current going to it when the key is on.
Does it blow when the knob is turned to max or regular ac? Thanks for additional info, I did need to remove the knee panels from the lower dash and then was able to remove the covers on the steering column. The terminals were really rusty as well. The truck operates ok, however the blower fan quits and the passenger air bag light shows up on in the instrument panel. Found the wire insulation was worn off in a small spot and very slight exposed wire. Is the correct fuse used? Are there any tricks to removing this piece? Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Blower Motor Resistor stock in-person! Open the large black plastic box Power Distribution Box on the left side of the engine compartment, closer to the firewall - it's up high and easily accessed. This is the relay that was in my Ranger. Or you may just be struggling to keep it highway-approved.
Hope this clears it up. Finally all the wires were transferred back to the new resistor. There is no ac settings on the schematic switch. When working with your blower motor you have to first understand that the blower basically works in the opposite manner of most automotive electrical components. It's located just behind the passenger side headlight and in front of the container for the air filter. Winter was here and a heater needed! The fuse blows about 20-30 seconds after the defrost setting is selected. From there watch the intensity of the light bulb in all positions what do you find in each setting get them back to me.
Altho' it's beyond the scope of this tutorial to diagnose these components. Make sure you check all of your fuses first aswell. Turn on the ignition and turn the blower switch through each position. I am going to post this in the moderators forum to get my fellow technicians to have a look into this and see if any of them can come up with anything. Someone may want to suggest this to Ford as well. You turn the blower on by completing the circuit to ground. Here is the resistor mounted in the heater box.
Of course you have every right to sell yours if it's such a big inconvenience. Would appear that resolved my problem. I have to get the car back to my son and I am running out of ideas. This problem was there before the ac was removed from the system. Like a 9 dollar part. You can find this tutorial in Spanish here: at: autotecnico-online.
You would be better off looking for an owner's manual at a local auto recycling yard formerly known as junk yard. Not to be pessimistic but I wonder how long the tape will last before the lever tube rubs through it again? Relays are exposed to high current loads and can sometimes get hot when they develop problems. On switch high speed the resistance should be low. On top of low prices, Advance Auto Parts offers 4 different trusted brands of Blower Motor Resistor products for the 1999 Ford Ranger. Also The power to the fan does not go directly to the relay. Make sure you check all of your fuses first aswell.
The following is the blower wiring for a Ford van, but I think it's essentially the same. Just did this 15 minutes ago Be sure to close the lid on the box when done! Instead of trying to clean the rust from my relay I went to Autozone and bought a new one. I taped the wires and repositioned them a bit. What is surprising is why it is not doing so in other modes. Thanks to this forum we found the same problem in the steering column. Te fan will operate normally if I keep it away from the defrost setting.
Here's the back side of the rusty resistor where the plug attaches. Didn't think much of it so I switched it to the off position. Recently, fuse 2 10A in passenger compart fuse panel has been blowing. Second, check to see if there is any power at the blower motor. By the way, the original blower motor on your 4. Normally you switch on a positive current to an electrical component to turn it on.
Phil Sorry, I need some clarification. The screw on the left side of it has already been removed. If the windows worked well before but became intermittent, I'd be checking the switches. Only box I have behind the headlight is the air box, and then the windshield washer fluid tank and coolant tank. Replacing the motor isn't too hard, getting the parts like the overflow bottle out of the way, took a while. It seems like you are being a little too cheap for your own good.
The fan is upstream of the switch which grounds it through the resistor, or straight to ground on high speed. I've never been stumped electricaly before this. Or the relay is something different? Please correct me if I'm wrong. Can you please elaborate on the 2 statements? There is a little box behind the passenger headlamp. Open the lid - there are a couple rows of small spade fuses - position 10, third in from the firewall, 1st row of spade fuses toward the front is a 15A blue small spade fuse.