My engine fan is running all the time. Normal?

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09-30-2009, 06:03 AM

#21

altf4

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Quote:

Originally Posted by pat161

Sorry, I didn't mean to be a jerk, I guess I could have worded that second post differently. I am glad you got it sorted out though, it really is amazing how much power that fan robs. I would do an electric fan swap but I feel a properly working belt driven fan is the most reliable choice.

no worries

Quote:

Originally Posted by txrider

If it's frozen up it'll cost mileage and power. But make sure someone didn't replace it with a non clutched flex fan.

I ran an entire tank through with the thing broken, and averaged 18.5. I'll check to see what I get with it fixed now.

It was the OEM fan clutch also.

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10-01-2009, 06:36 AM

#22

stir_fry_boy

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Every 3.4L V6 (5VZ-FE) engine I have ever listened to has always had the fan spinning when it first starts up (roaring). Mine does it. But after a little bit, it turns off but the fan is still spinning only not at the same speed. I figured that when it turns on when you first start up it is normal. If the temp outside is about 50-60 mine rarely turns on unless I am going really slow or up a canyon. If the temp outside is closer to 80-100 then mine is at least at half speed all the time. I can hear the difference between off, half on, and full on just like an electric fan on pretty much any car.

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10-02-2009, 01:09 PM

#23

Parker Runner

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My wife asked me "when do I pull out of the garage after starting the truck".

I said, when you hear the fan turn off. That is about 45-60 seconds depending on the temp outside.