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Old 06-15-2021, 03:18 PM   #1
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6.0L diesel loud fan

Greetings,

Sometimes when I've been going up hill for a while and the engine temp gets hot (EOT ~230) I hear a super loud screaming fan start and typically run for a few minutes and then turn off as the temp drops. The first time I heard it, it was pretty disconcerting.

I'm wondering exactly what fan that is and where it is located and if that's a normal howling when it's on. Is it the engine or tranny fan? (I didn't track the tranny temp) Are quieter one's available?

Thanks,

Dave

2005 SMB 6.0L
E350 eb
Quigly 4x4
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Old 06-15-2021, 04:29 PM   #2
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Ha Ha! I just went through the Teton Pass as well when it howled for a longer time than normal. I have a ScanGauge that I programmed to show both ECT and EOT to make sure the heat exchanger isn't getting clogged up.

Do you know where that fan is located?
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Old 06-15-2021, 05:05 PM   #3
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That’s good!

When you don’t hear the fan roar under similar conditions…. Get your AAA card ready…
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Old 06-15-2021, 05:34 PM   #4
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Apologize about deleting my original post.. but yeah, as far as I know this is the main cooling fan that does potentially have issues with the fan clutch
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Old 06-15-2021, 05:36 PM   #5
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Originally Posted by Sporkchop View Post
Apologize about deleting my original post.. but yeah, as far as I know this is the main cooling fan that does potentially have issues with the fan clutch
“Alexa rotate” 😂😂
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Old 06-15-2021, 06:16 PM   #6
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Sounds normal to me. With EOT at 230, still within normal range, the fan clutch is probably fully engaged which is jet loud above 2500 RPM.
Nothing says, "yes, I have a 6.0, in a van" more than scaring children with your fan.

I'm thinking there is a new discussion/debate on hood louvers on the horizon.

- Eric
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Old 06-16-2021, 08:36 AM   #7
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I had mine come on climbing Wolf Creek Pass one day just before overtaking a cyclist peddling up the same road. He thought I had done something intentional to mess with him and he turned around to flip me off. It's not like I was rolling coal or anything. Just a really loud fan working as designed on the 6.0L diesel.
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Old 06-16-2021, 09:58 AM   #8
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Just wait until you get on a dusty road...man it really kicks up the dust.
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Old 06-16-2021, 05:09 PM   #9
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I love it when that fan kicks in.
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Old 06-20-2021, 06:04 PM   #10
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6.0 diesel loud fan

I am presumed the loud fan was my turbo. Now that the weather has changed it occurs more often. Is my presumption correct?
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