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2001 & 2005 cooling fan issue

 
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  #1 (permalink)  
Old 17 May 2009, 12:58 pm
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Default 2001 & 2005 cooling fan issue

my daughters 2001 started running hot yesterday, and after reading many posts here i tested the cooling fan on both the high
and low side with jumper wires, only got a slight movement on one side ,maybe a full revolution, and a plastic rubbing sound. nothing on the other side. i figure the fan is bad. so i decided to check my wifes 2005 to see if fan comes on when a/c is turned on. it did not come on. is it just pure bad luck that now i have to replace fans on both PTs ? or is there something else i can check on my wifes 2005 ?
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Old 17 May 2009, 01:56 pm
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Default Re: 2001 & 2005 cooling fan issue

According to what I know and to what we have been telling owners and what I've proved to myself countless times (including just now.....when the engine is cold and you start it up WITHOUT the A/C ON, the low speed fan stays off, but as soon as you turn the A/C ON, the low speed fan should come on.

The high speed fan doesn't kick on till a particular temperature has been reached. The fan kicks OFF when you reach a speed of 35mph as there's enough air coming threw the radiator to keep everything cool.

The Engine Coolant Temperature sensor (ECT), fan relays and PCM all work together in fan operation.

There IS a difference between Turbo and Non-turbo fans/relays as the Turbo and a variable speed fan whereas the Non-turbo has a low and high speed.
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Old 17 May 2009, 01:56 pm
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Default Re: 2001 & 2005 cooling fan issue

update: stopped working on daughters 2001 when it was obvious the fan went bad. removed, cleaned terminals and reinstalled both the high and low speed relays, also removed, cleaned, and reinstalled battery terminals, reset computer in my wifes 2005. all is fine now, low speed fans is on, rough idle gone a/c working fine. she is test driving vehicle now.
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Old 17 May 2009, 01:58 pm
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Default Re: 2001 & 2005 cooling fan issue

Good job.
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Old 17 May 2009, 03:36 pm
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Default Re: 2001 & 2005 cooling fan issue

just finished installing new fan in 2001, cleaned terminals reset computer. started vehicle, no fan turned on a/c and it started just perfect. all is well with both PTs now. great vehicles once again.
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Old 17 May 2009, 04:00 pm
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Default Re: 2001 & 2005 cooling fan issue

now that ive completed my bath. i wanted to thank CREWZIN for taking the time to post pictures and and tech info as hes does. it seriously made this a simple repair. as always i spent money only for parts on our PTs. both my girls love them. what a great forum.
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Old 17 May 2009, 05:05 pm
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Default Re: 2001 & 2005 cooling fan issue

Your very welcome "dad", glad I could help.
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Old 08 Jun 2009, 08:48 pm
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Default Re: 2001 & 2005 cooling fan issue

my daughter called me an hour ago and told me her 2001 was hot. i just replaced this fan motor 3 weeks ago. got it home and checked to see if fan was coming on with a/c switch activated. it did not come on. so i went to test the new fan motor. when i started to disconnect the fan for testing i realized the plugs were extremely hot. when disconnected i noticed the center (ground) terminal was melted. i cleaned this melted area and reconnected the terminals and it started running. my question is could this new fan (FROM ORIELLY AUTO PARTS) be drawing too much power and causing this ?
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Old 08 Jun 2009, 09:06 pm
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Default Re: 2001 & 2005 cooling fan issue

That's a good possibility if it wasn't exactly made for the PT. Do you know if it was a generic replacement or an exact PT Cruiser replacement?
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Old 13 Jun 2009, 04:53 pm
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Default Re: 2001 & 2005 cooling fan issue

On my 2005 PT Cruiser 2.4L the engine fan does not seem to cycle for the AC, however it does cycle for the engine cooling system only.

Do you know what triggers the AC system to start cooling? Is it a relay or some sort of independent sensor?

when the engine idles the AC system gets warm, it also has been venting refrigerant when I raise the isle in park, signifying its not cooling properly.

Any and all information would be helpful, thanks in advance.
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