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Fan blower functions quit working

01saharatj

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On my 2001 Jeep Wrangler I replaced the resistor and blower motor about 3 years ago for same issue… now today the highest Setting for the blower quit working!! Right when the dam temps are hitting over 100 degrees. I have a 2006 f150 225000 mi on it never had an issue not sure who the f..king ass…e is at Chrysler and thier garbage designs! But here is to to you you!!!! F..k you you f..king prices of shit engineering!!!! Rant over…
 

Artsifrtsi

I just wanna go wheeling...
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Your motor bearings may need cleaning/lube or replacement altogether… it’s pullling too much current.
 

MikenMel

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If it fails on only one speed, I would suggest that the blower motor speed resistor is going bad, not the motor itself. As the part is not very expensive, I'd start there first.
 

Zorba

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There are such things as tolerances and engineering "overhead". The guy who designed the blower controls was asleep the day they taught that in engineering school.
 

mrblaine

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There are such things as tolerances and engineering "overhead". The guy who designed the blower controls was asleep the day they taught that in engineering school.
If that were true, they wouldn't last 3 years or 36,000 miles. They do in fact last at least that long.
 

Lou

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Did you use OEM parts? Most likely no. Don’t curse at chrysler If you didn’t use their parts…
 

P man

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On my 2001 Jeep Wrangler I replaced the resistor and blower motor about 3 years ago for same issue… now today the highest Setting for the blower quit working!! Right when the dam temps are hitting over 100 degrees. I have a 2006 f150 225000 mi on it never had an issue not sure who the f..king ass…e is at Chrysler and thier garbage designs! But here is to to you you!!!! F..k you you f..king prices of shit engineering!!!! Rant over…
Probably a resistor or wiring issue..
 

Zorba

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If that were true, they wouldn't last 3 years or 36,000 miles. They do in fact last at least that long.
I respectfully disagree. Like the short lived radiator, other vehicles I could name don't have this kind of problem. The thing needs larger wattage resistors and/or blower motor bearings that don't cause the motor to draw excess current. It was obviously designed too close to "the edge".

It is what it is - the R-pack was replaced in mine by the dealer I bought it from. When it craps out, I'll replace it, and then see if I can come up with appropriate value resistors in a higher wattage rating and fix the stupid BS problem for good.
 

mrblaine

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I respectfully disagree. Like the short lived radiator, other vehicles I could name don't have this kind of problem. The thing needs larger wattage resistors and/or blower motor bearings that don't cause the motor to draw excess current. It was obviously designed too close to "the edge".

It is what it is - the R-pack was replaced in mine by the dealer I bought it from. When it craps out, I'll replace it, and then see if I can come up with appropriate value resistors in a higher wattage rating and fix the stupid BS problem for good.
It isn't the resistors, it isn't the blower motor. It is in fact the location which gets full of dust and debris that trashes the bearings and motor windings which drives the current draw up. Fix that and you can disagree all you like, that doesn't change the fact that next to none were replaced under warranty. We already fixed your stupid radiator bullshit by pointing out that your fucking radiator in the molasses speed rig wouldn't last any longer than the OEM TJ versions if it was subjected to the conditions produced in the TJ.
 

Zorba

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It isn't the resistors, it isn't the blower motor. It is in fact the location which gets full of dust and debris that trashes the bearings and motor windings which drives the current draw up. Fix that and you can disagree all you like, that doesn't change the fact that next to none were replaced under warranty. We already fixed your stupid radiator bullshit by pointing out that your fucking radiator in the molasses speed rig wouldn't last any longer than the OEM TJ versions if it was subjected to the conditions produced in the TJ.
Then why did my dad's Chevy truck with a 454 gas engine not have any radiator problems either? He towed a 29' 5th wheel with it.
 

mrblaine

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I couldn't tell ya.
When you can, I suspect you'll know that answer and it likely isn't due to being worked hard. You need to get your head around the fact that we are working the TJ cooling system hard and it is awesome the parts last as long as they do and stop dragging low stressed stuff into it like that matters. The radiator in my Dodge Diesel is fine, it will be fine, it doesn't get worked very hard. I drove the damn thing for 2 years before I finally got it hot enough towing a heavy load up a steep enough grade long enough for the fan clutch to finally kick in and even then I was more than 1/2 way up the Cajon Pass.

2 years and 50,000 miles before the fan clutch let me know I even had one. You can't get a TJ to the end of the block practically before the fan clutch kicks in. One cooling system is stressed a bunch, one isn't. It doesn't take a genius to figure out which one is going to last longer. And yes, my Dodge radiator is made the same way. Plastic tanks and an aluminum core.

1653447810516.png
 

Zorba

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When you can, I suspect you'll know that answer and it likely isn't due to being worked hard. You need to get your head around the fact that we are working the TJ cooling system hard and it is awesome the parts last as long as they do and stop dragging low stressed stuff into it like that matters. The radiator in my Dodge Diesel is fine, it will be fine, it doesn't get worked very hard. I drove the damn thing for 2 years before I finally got it hot enough towing a heavy load up a steep enough grade long enough for the fan clutch to finally kick in and even then I was more than 1/2 way up the Cajon Pass.

2 years and 50,000 miles before the fan clutch let me know I even had one. You can't get a TJ to the end of the block practically before the fan clutch kicks in. One cooling system is stressed a bunch, one isn't. It doesn't take a genius to figure out which one is going to last longer. And yes, my Dodge radiator is made the same way. Plastic tanks and an aluminum core.

View attachment 332676
Ok, fine. Point taken. However, I sure would think that it would be possible to engineer a radiator that would last, even under these "severe" conditions.
 

Lou

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Ok, fine. Point taken. However, I sure would think that it would be possible to engineer a radiator that would last, even under these "severe" conditions.
If it was possible wouldn’t the aftermarket have figured it out by now?
 

psrivats

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If it was possible wouldn’t the aftermarket have figured it out by now?

I'm sure it can be done given time and effort, but I'll make a good bet that most people will not be willing to pay what it'll cost to make a OEM like or better than OEM solution.
 
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Dr. Internet

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I'm sure it can be done given time and effort, but I'll make a good bet that most people will not be willing to pay what it'll cost to make a OEM like or better than OEM solution.
Absolutely! Engineering has been called the 'art of compromise', because the engineer is faced with many priorities whenever anything is designed. For example: safety, durability, performance, repairability, cost, functionality, and so on. After the design is finished, the bean counters and button sorters come back and tell him it's a great design; now, make it cost half as much. My '06 still has the original radiator, blower fan, and resistor pack. I'm amazed they have lasted this long.
BTW, I think the 'right' way to design the blower fan would have been with three windings, one for each speed and no need for the resistor voltage divider.
 

mrblaine

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Absolutely! Engineering has been called the 'art of compromise', because the engineer is faced with many priorities whenever anything is designed. For example: safety, durability, performance, repairability, cost, functionality, and so on. After the design is finished, the bean counters and button sorters come back and tell him it's a great design; now, make it cost half as much. My '06 still has the original radiator, blower fan, and resistor pack. I'm amazed they have lasted this long.
BTW, I think the 'right' way to design the blower fan would have been with three windings, one for each speed and no need for the resistor voltage divider.
PWM brushless would be my choice.
 
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mrblaine

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Ok, fine. Point taken. However, I sure would think that it would be possible to engineer a radiator that would last, even under these "severe" conditions.
They do last, it is common to go more than 100,000 miles. At that mileage and the cost at the time, that is about a tenth of a cent per mile. That is 1/10 what the average stockish size set of tires costs you.

One can be engineered. I don't know if I can guarantee it at this point and I suspect it will outlast the OEM radiator, but I'm not willing to spend a 1000 bucks to find out.
 
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Zorba

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They do last, it is common to go more than 100,000 miles. At that mileage and the cost at the time, that is about a tenth of a cent per mile. That is 1/10 what the average stockish size set of tires costs you.

One can be engineered. I don't know if I can guarantee it at this point and I suspect it will outlast the OEM radiator, but I'm not willing to spend a 1000 bucks to find out.
Hell - with today's fools spending more than that on a fucking smartphone that lasts 3 years tops...

I'd rather spend big bucks on a radiator ONCE, and never have to worry about it again. But instead, we get "technology". I don't mind spending money on quality - but I only want to spend it once.