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  #1  
Old 09-30-2010, 09:40 PM
art47 art47 is offline
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Default Radiator fan

Should the fan be turning when the engine has just had a cold start?

Thought the fan was to kick in when a certain temperature was achieved and then cut out when the temp dropped.

My fan drives full blast with a cold start. Is this ok?

art
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Old 10-01-2010, 01:13 PM
EMB1230 EMB1230 is offline
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Default Re: Radiator fan

Rangers have a belt driven fan, you are thinking of an electric fan which only come on when it needs to.
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Old 10-01-2010, 01:54 PM
rangerman3JX rangerman3JX is offline
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Default Re: Radiator fan

the fan turns on and off at cretin speeds of the engine. rangers have a fan clutch its a lot like a go cart clutch but in opposite. the lower rpm's like idle and resting at a stop like it'll turn on.
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Old 10-01-2010, 02:01 PM
FireRanger FireRanger is offline
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Default Re: Radiator fan

Not exactly. That big round thing in the middle is a thermal clutch. The hotter it gets, more the clutch releases, the faster the fan turns. It will never ever stop completely. It can't. But as it gets hotter, the fan will speed up and you will noticeably hear it roar.
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Old 10-01-2010, 02:10 PM
EMB1230 EMB1230 is offline
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Default Re: Radiator fan

Quote:
Originally Posted by FireRanger View Post
Not exactly. That big round thing in the middle is a thermal clutch. The hotter it gets, more the clutch releases, the faster the fan turns. It will never ever stop completely. It can't. But as it gets hotter, the fan will speed up and you will noticeably hear it roar.
Lol, yeah that's what I meant. It is normal for it to be quite loud upon a cold start. Typically, a RWD vehicle will have a clutch fan whereas a FWD vehicle will have a electric fan. Of course, there are exceptions!
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Last edited by EMB1230; 10-01-2010 at 02:13 PM.
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Old 10-01-2010, 06:12 PM
art47 art47 is offline
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Default Re: Radiator fan

Thanks for the info, I guess its working correctly and I'll leave it alone.
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