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Radiator low speed not working

 
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Old 22 Apr 2012, 08:35 am
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Default Radiator low speed not working

I have a 2007 PT Cruiser. The radiator fan wasn't running on low when the air conditioner is on. I replaced the fan yesterday but that didn't fix the problem. Any suggestions on what to try next?

Thanks for your help in advance.
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Old 22 Apr 2012, 08:45 am
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Default Re: Radiator low speed not working

Relays?
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Old 22 Apr 2012, 07:15 pm
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Default Re: Radiator low speed not working

Check the fan to harness connection. Is it burnt? Then check the fan itself by running a lead, straight from the battery to both fan connections (low and high). If the fan works in both speeds (by hotwiring it), then you know it's not the fan. I'd suspect the connection, though.

Tim
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Old 10 May 2012, 10:57 pm
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Default Re: Radiator low speed not working

Guys, I've seen postings time and again about the radiator fans and guesses as to diagnosing the problems, overheating engines, etc. In the OEM Service Manual there is an entire section dedicated to the engine cooling system and how to troubleshoot it. I was going to post this in my library thread but it's locked, so I'll post it individually until Crewzin unlocks it.

Now, the service manuals are different for '06 and up, however if I were you and I was troubleshooting overheating problems, I'd download both because they both have excellent info in them.

Here they are, you can download directly from my web library:
2000-2005 PT Engine Cooling System
& 2006 and up PT Engine Cooling System.
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