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Radiator cooling fan - should be running whenever the engine is on, right? >

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Old 10-25-2006, 04:06 PM
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Default Radiator cooling fan - should be running whenever the engine is on, right? >

Driver's side fan. I wonder if this is a connector - I replaced it six months ago...
Old 10-25-2006, 04:12 PM
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Default Nope....>

Only when the radiator temp sensor triggers it. It should cycle on and off if you sit at idle for a prolonged period...
Old 10-25-2006, 04:24 PM
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Default was sitting in the driveway after getting home, 71F outside, light rain, easy drive >

no a/c on; then did an a/c read: 99C moving up to 100C; no fan.
Whaddya think?
Old 10-25-2006, 04:36 PM
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I think the trigger point is North of there...
Old 10-25-2006, 04:39 PM
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Default Me too >

Is this the famous (green) temp sensor that triggers it that's gone bad?
Old 10-25-2006, 04:47 PM
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Default No, Steve means you need a bit more than 100c to trigger the fan... >

Here's a test. After driving home in moderately warm weather, just let it sit in the driveway idling. Sooner or later --and prob'ly within 5 mins-- the fan will kick on for a couple of minutes. You might see the temp needle raise to 1 hash mark above 12 o'clock before if cycles on. Then it'll prob'ly run until the needle drops to the 12 o'clock mark.
Old 10-25-2006, 04:57 PM
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Default ok >

I was running to 103/105C and up last 'spring' when ambient temps were in the 90's; I replaced the fan and engine coolant temps never went over 93C, so with temps only in the 70's and engine temps running back up, I worry...
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