Hello,
I have a 97 Explorer Sport, 6cyl 4.0 SOHC. When the weather gets hot, sometimes the engine starts making this really loud low frequency humming noise. I think the problem is somewhere around the utility belt, because the utility belt starts resonating when this happens. I've replaced utility belt a couple of times which didn't fix the problem. I've checked all the bearings and everything seems to be running smoothly.
Any ideas appreciated.
Thanks, Hilbert
It's probably your fan clutch. I have the same issue where it sounds like a semi-truck, but the sound frequency will only go so high as I accelerate and then the sound will level off at around
2500 RPM's.Hope this helps,
-IanCT
I never did replace it, it still works and I have no problem with the hum. Sounds like a mac truck, I kinda like it... :)
I don't hink it's too hard to replace yourself if you're so inclined.
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