Both of these need to be intact for the blower motor to operate properly. Although switch failure remains uncommon compared to all the other possibilities, it still remains possible for the switch to fail. Your email address will not be published. In addition, the wiring diagrams and the circuit operation also remain very much alike. With the low cost of the replacement part and the high failure rate, I'll just go ahead and replace it. Whether you have a blower motor problem on a 2009 Ford escape, 2004 Ford F150 pickup truck or even an Expedition or Mercury mariner these blower motor control systems use the same parts. How to replace the ac and heater fan speed resistor in a 200407 how to replace the ac and heater fan speed resistor in a 200407 chrysler pacifica.
The Ford blower motor resistor deployed on the automatic temperature control systems is larger and has aluminum heat sinks incorporated into the design. Since the resistor fits into the heater case they direct air created by the spinning fan, called the squirrel cage, across the heat sink fins. This is an efficient way of cooling down the entire module assembly. You can purchase these pigtail electrical connectors separately. On the automatic temperature control system they further complicate the system by using a module. In this video, we look at intermittent blower motor function on a Ford Expedition but will be the same for similar F150's.
You can verify this in the Ford F150 blower motor diagram below. When you buy replacement blower motor resistor modules from the Ford dealer they are much more expensive and they sell the pigtail connectors separately. This is the third time I've gone after this under the dashboard. In fact, overheating of the resistor becomes more likely to damage the electrical connector that plugs into the assembly. Before we move on I want to make one more important point. Unfortunately, failure of the component still remains possible despite the best efforts of cooling the parts down.
It's important to verify the correct replacement part as variations exist throughout the different years and models. I'll go one step further and say that if you're blower motor works on high and you have the card type Ford blower motor resistor, no further diagnosis is required. Mercury grand marquis questions 1996 mercury grand marquis hvac 3 answers. As you can see from the wiring diagram below, there are two fuses protecting the circuit. First we'll cover the most common symptoms associated with a bad Ford blower motor resistor.
Other Ford Blower Motor Problems Before we get into other Ford blower motor speed control problems let's talk about what happens when the fan motor doesn't work at all. Both the automatic temperature control and the use switches on the control panel. Circuit diagram ford f 150 4 6 engine diagram additionally f maf connector c along with wd ford furthermore zvan along with mt including post including d mustang wiring ignit furthermore ford f powertrain control module location including ma moreover ford thunderbird together with exhaust l along with f along with f b b d e af c fe ec f Ford F 150 4 6 Engine Diagram Comments and Responses on Wiring diagrams, engine problems, fuse box, electrical diagram, transmission diagram, radiator diagram, exhaust system, suspension diagram. Here is the replacement resistor on amazon. Not only can the connector melt, but the heat can distort the terminals. Ford F 150 4 6 Engine Diagram Service This amazing ford f 150 4 6 engine diagram that brings alongside 14 pictures additionally 1986 ford f-150 engine diagram also with 1995 ford f-150 4 9 engine diagram as well as 2001 ford 5. These cooling fins channel heat away from the internal electrical components.
This vehicle the blower motor would turn on and off intermittently in various conditions, but if the wire harness for the blower controller was wiggled it would come back to life. If you're shopping on amazon, it helps me if you use my link here: Go here to get an incredible discount on an all American sun oven Click here to visit Rada cutlerys website. If this doesnt fix it, I will be replacing the plug and resistor. However, the most common complaint when this part fails is that only the high speed setting functions. The four wire connector that plugs into the resistor module needs a thorough inspection.
Wiring color code or symbols, wiring harness, radio and audio wiring, circuit diagram, light switch wiring diagram. Solved fuse location for the heatac blower motor 1997 fixya. In many cases when this situation occurs, you have a blown fuse. If you observe any damage or discoloration of the terminal, you should always replace the connector. We have one more important point to make about this Ford blower motor electrical problem.
Sometimes you will only have low and high speed settings. Blower resistor schematic wiring schematic diagram blower resistor schematic. Wiring manual 1999 ford ranger blower motor wiring diagram furthermore ranger together with c b also with moreover inspiring new honda civic engine diagram honda civic engine diagram honda civic engine diagram honda civic ex engine diagram honda civic engine wiring moreover c b including mg l including c e also with b f ff moreover wiring diagram mercury sable ireleast throughout ford taurus fuse box diagram together with honda accord additionally toyota camry engine compartment fuse relay diagram throughout toyota camry fuse box furthermore diagram ignition switch 1999 Ford Ranger Blower Motor Wiring Diagram Comments and Responses on Wiring diagrams, engine problems, fuse box, electrical diagram, transmission diagram, radiator diagram, exhaust system, suspension diagram. This is why at the bottom of the article we include a 2008 F150 blower motor wire diagram. It's possible for the electrical failure of the blower motor resistor to take out one or both of these fuses as it melts.