Low pitch humming
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01-14-2011, 01:18 PM
Join Date: Jan 2011
Location: NV
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Low pitch humming
Hi all, new to the forum but have owned my Caravan for 4 years, love it and think it is a great vehicle.
About 2 weeks ago I heard a low pitch hum when I was driving, it is different and separate from the normal acceleration noises. It sounds like a truck with big mud tires is driving next to me, only a lot quieter. I am not getting any slipping in my gears, no overly long transitions between the gears and no loss of power or acceleration. The noise starts about 10-15 mph, but not when just idling along or in reverse (although I haven't tried to drive in reverse at 15-20 mph yet to see if the noise is evident). I have a 3.3L with 97,000 miles, 2005. I am getting ready to drop the pan on the tranny and change the fluid and filter, (and put in a drain plug in the pan while I am at it) and change the belt. Is there anything else that I can check while I am doing the work, any other parts that may need/should be changed while I am in there that could be the cause? Thanks for any help and input!
About 2 weeks ago I heard a low pitch hum when I was driving, it is different and separate from the normal acceleration noises. It sounds like a truck with big mud tires is driving next to me, only a lot quieter. I am not getting any slipping in my gears, no overly long transitions between the gears and no loss of power or acceleration. The noise starts about 10-15 mph, but not when just idling along or in reverse (although I haven't tried to drive in reverse at 15-20 mph yet to see if the noise is evident). I have a 3.3L with 97,000 miles, 2005. I am getting ready to drop the pan on the tranny and change the fluid and filter, (and put in a drain plug in the pan while I am at it) and change the belt. Is there anything else that I can check while I am doing the work, any other parts that may need/should be changed while I am in there that could be the cause? Thanks for any help and input!
