went out to start my truck today in 5 degrees, with snow and blowing snow, after it started I turned on the heater fan, and snow blew out the defroster, then the fan, blower motor started to surge high and low speeds, as it did this you could hear the engine surging, like a large amp draw, then the heater, blower motor stopped working, I checked the 15 amp climate control fuse, and the 40 front blower motor fuse, located on the engine compartment fuse panel, both fuses good, checked with a test light, power both sides, the heater selector switch is working, can hear the vacuum solenoids working, still now blower - fan motor, allowed the truck to warm up and run for 2 hours, still no good, I can't find out where the blower motor is, my guess is its inside the box behind the glove box. I would appeciate any help, Thank You

 

Some how snow got into your heater case. Find and solve that problem first. Because it did then it sounds like it melted in your fan motor and may have fried it. I can not think of any way posiable for snow to of gotten in there with out somebody sitting and forcing it in by hand. Please keep us updated.

 

found the problem, removed the blower motor, found there was snow inside the heater box, snow and ice causing the motor to lock up, got the motor free, by moving it by hand, still didnt work, removed the motor, brought it in the house to warm it up, took it back outside and pluged it in, without installing it, and it worked, at all speeds, allowed it to run for 10 mins at low speed, then it stopped again, brought it in the house again to warm it up, plugged it in again, now it only works on high speed, only 2 settings, off, and high speed, I figure there must be some type of resistor, in series with the speed switch, and a parallel curcuit, between it to allow it to run at high speed, must be an open resistor somewhere in that curcuit.

 

Thats tolerable for now, even if you only have high, atleast it will defrost and heat you up..Sounds like there might still be water in the brushes may have to let it dry inside over night or so.

I can not emphasis enough how much you need to find out how the snow got in yout HVAC case and some how fix it so rain nor snow can get in there again.

I think somebody may have played a prank on you! Unless your looking for an electrical fire then you need to find out for sure how it got there. Plus your trucks brain isn't to far away from there and is below your ducts...if there is snow there then when it melts it could run down the ducts and fry the brain. Or even when it rains....thats a few hundred bucks and your truck won't run anymore if it shorts out.

 

If the fan runs with high only, sounds like the motor is not completly trashed ( why it is not running when clean, but cold is another question )

The blower motor itself has the connector C190 on it, with a Brown with a Yellow stripe and a Org with a black stripe on it ?

The ORg/black stripe connects to the splice for the for blower motor resistor when is connected to the speed settings on the switch. It looks like there is a fuse inside the blower motor resistor from what the 2001 EVTM shows on page 54-1. This is connected to the speed selector by C191, which is a black 4 pin square connector.

Got me about what looks to be a fuse in the blower motor resistor. It is the correct symbol, but inside the resisitor block, which means it is internal. Don't know how that comes apart, to see if you could solder a new one in, or if you have to buy a whole new one.

The blower motor resistor should be near the blower motor according to the location index.

Good luck, let us know what you come up with.

 

Off topisc for a second...SSCULY...is that after Scully from the X-Files?

 

Actually it is my common email address ( first inital last name ) Steve Scully=SSCULLY. Just easy to use this on all the forums I am on, rather then making up a new one for each ( zx12r.org, Sport Tour , Concours, Stunt life, etc ), that has to do with the forum ( i.e. 2001silver_SCrew, vs MetCandyBlue9R, vs. crash_and_burn_trying_an_endo, etc ).

Yes, I get that one a lot though

A few of the old timers around here know first and last names of people. It has not come up in a few months though, so I can understand the question.

 

Dear SSCULLY Thank You for the information, Yes, the wires are brown with a yellow stripe, and orange with a black stripe, the brown wire is positive, and is on the switching side, and the orange wire is negitive all the time. There is a 2 pin connector that plugs into the motor, that quickly goes 2 inches o a 6 pin, male and female connector. So ur saying that resistor is near the motor somewhere? I was kinda thinking the resistor might be near the fan switch, but im going to look for it and let you know. I called my local Ford Dealer, talked to the parts dept, and they have no idea what im talking about. I was going to buy a repair manual for the truck just so i could look at the wiring diagram, but all the books just go up to the 2001, and I don't know if thats the same as my 2003.

 

Yea I'm fairley new to this forum, I'm still trying to learn everybody, just thought I'd ask.

Did you ever find out how it got in there? I have been wracking my brain crawling all over my truck and tearing it apart for 2 days just trying to find anyway that weather could get in there. I hate a phenomina that I can not figure out! ARRRG!

Has it been wrecked on the passenger side front either now or in the past by any chance? Even then if the body has been fixed, I can't see how either. Heck I don't know... I just hope that it don't happen again nor to me.

 

Take a gander: https://www.f150online.com/forums/sh...hreadid=182977

SL

 

OK its a bad blower resistor, I CANT FIND IT !!!!!!!!! I looked everywhere, I went out and purchaced a Haynes Repair Manual for the 97 to 02 Ford Trucks, its NOT there where the picture says it is. I tore the whole heater apart, no resistor, I traced all the wiring, NO wiring is connected anywhere else in the heater box. I have a wiring diagram with the color of the wires, and 4 wire connector into the resistor, I can find the wires, but I still can't find the RESISTOR, Im going NUTS AWWWWGGGHHHHH !!! my only next step is to cut the wiring harness apart and finding where the 4 wires end up. I called Ford, even they don't know where its at, they told me they never had one that went bad. IM GOING CRAZYYYYYY AAAAAAGGGGHHHHHH!!!!! The wiring from the blower motor just goes into the main harness under the dash, and there is no resistor near the fan switch, or the climate control switch. If anybody here could tell me where i could find it, it would be greatly appeciated, Thank You

 

Took a look at the DVD for the 2002, and it says it is behind the rear seat ? WTF ??

I am not kidding, that is what the DVD has on it.

Does not say if it is the driver's side or pass side.

That is the location for the connector C1228.

I have no idea why they would do that, it has to be a typo in the manual.

If you feel up to taking out the trim parts, and pulling the carpeting back, might be worth a look.

Sounds like a real bad idea to me though.

Sorry don't know what to tell you about it.

This is different then the 2001 EVTM, which shows it next to the blower motor ( not the switch ).

Good luck, let me know if you need anything else.

Also drop me an email if you want the page from the DVD that shows this.

Steve

 

I found the resistor, its hidden between the blower unit, and the air box, its mounted upside down, the only way to see it is with a mirror, its impossible to plug it in while its bolted in, the only way to attatch the wire plug to it, is to unbolt it, so the wire harness hangs down so you can see it and plug it in, then bolt it back in with it plugged in, replacing it fixed my problem, tested the old one, it has a fuse link in the curcuit that tested open, it has 3 resistors, they tested ok, Ford Part #4L3Z*19A706*AA cost $16.15 Thank You for ur help

 

I am new to this forum so please bare with me. I have a 1993 ford F-150 and I cannot find the blower motor resistor I am not sure if the post before this answers my question but I was wondering if there was some kind of online diagram or a manuel of where I can locate this part to replace it. Once again thanks for any help and I hope I have asked this in the right forum.