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  #1 (permalink)  
Old 03 Aug 2018, 02:02 pm
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Default cooling fan

is there anyone who makes a QUALITY radiator fan assembly, that does not crap out on a yearly basis?
thanks
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Old 03 Aug 2018, 02:20 pm
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Default Re: cooling fan

Quote:
Originally Posted by fattmann View Post
is there anyone who makes a QUALITY radiator fan assembly, that does not crap out on a yearly basis?
thanks
With everyone changing manufacturing locations of these radiator fan assemblies that is a good question.
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Old 03 Aug 2018, 02:25 pm
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Default Re: cooling fan

The one I got from Rock Auto 7 years ago is still doing good...
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Old 03 Aug 2018, 02:36 pm
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Default Re: cooling fan

I think a lot can depend on where you live and how much you run the a/c (if the fan is running on high or low speed).

I live in Texas and use the a/c a lot. Fans in my PT last about 2 years, and it's usually the high speed that quits working.
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Old 03 Aug 2018, 05:50 pm
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Default Re: cooling fan

It's a brushed motor. Those little copper blocks wear down based on how much current is passed through them while they are scraping the rotating part of the motor plus heat plus contaminants. If you could replace it with a brushless motor, it would last a very long time. Typically the lifetime seems to be around 7-9 years. If the car were owned by a little old lady in a temperate climate, the low speed brushes will go out first because the fan will turn on low speed at stop lights. In a hot climate where the A/C is always on, the high speed brushes will go out first.

rcksein,
You seem to be a good candidate for making a custom brushless fan for your PT. At 7-9 years, it's not worth worrying about, but like the torque struts, if they go out every 2 years, then something costing $2-$300 may be worth it.
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Old 03 Aug 2018, 06:02 pm
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Default Re: cooling fan

Quote:
Originally Posted by rsrocket1 View Post
It's a brushed motor. Those little copper blocks wear down based on how much current is passed through them while they are scraping the rotating part of the motor plus heat plus contaminants. If you could replace it with a brushless motor, it would last a very long time. Typically the lifetime seems to be around 7-9 years. If the car were owned by a little old lady in a temperate climate, the low speed brushes will go out first because the fan will turn on low speed at stop lights. In a hot climate where the A/C is always on, the high speed brushes will go out first.

rcksein,
You seem to be a good candidate for making a custom brushless fan for your PT. At 7-9 years, it's not worth worrying about, but like the torque struts, if they go out every 2 years, then something costing $2-$300 may be worth it.
Isn't it just that on low speed then 2 of the brushes are working and when on high speed then all 4 brushes are working?

They should have just come up with a single speed fan, and when the vehicle calls for it to be on, then it's on at high speed.
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Old 03 Aug 2018, 08:10 pm
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Default Re: cooling fan

Brushes are carbon I believe not copper. Low speed brushes go first because the one on the bottom when running gets all the fine dust and dirt to facilitate the quicker wearing of the brush.
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Last edited by JoeX; 03 Aug 2018 at 08:12 pm.
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Old 03 Aug 2018, 10:20 pm
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Default Re: cooling fan

Here's the link to rebuilding the fan motor and a picture of the brushes.

Radiator Fan Motor Replacement

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Old 04 Aug 2018, 09:28 am
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Default Re: cooling fan

It's been my experience that the OEM equipment is best But you pay the price. Dorman fan I think has a lifetime warranty but it may not last as long as the OEM.
Mike
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Old 04 Aug 2018, 12:41 pm
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Default Re: cooling fan

One side will crap out.

Buy a S/H one, which will have one side crapped out as well unless it's your lucky day.

Ping off the clip holding the fan.

Bend the clips free around the backplate to the fan motor.

Pick the best four and replace.

Rebend clips, put fan back on.

The longest job is getting the effing fan out to repair it - especially on a diesel, where the top hose tube from the rad blocks the two relays, which you cant ping off the fan housing except from underneath... where you cant get a screwdriver in them to ping them off ...
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