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michicks 07-23-2010 01:02 AM

Whining/Humming noise from 40mph up
I've noticed it for a month or two but now people riding with me are noticing it as well. When I hit 40mph there is a whining noise, can't really tell where but it seems like the cab forward and if you roll down the window to listen the road noise covers it. Whats strange is it only does it when you are pressing the gas, if you let off it stops, if you push again and are doing over 40 you hear it.

Anyone have any clue what it could be?

its a 02 Ram, 5.9 quad cab 4x4. 190k miles. I had the right rear axle and wheel bearing replaced about 6 months ago but that was a completely different noise as it had more a a grinding sound to it.

Tried it with o/d off does the same thing, and it shifts at about 35 mph normally and you can't hear it right after the shift.

Only thing that is coming to mind is tranny problems, one day 3 weeks ago it didn't feel right pulling out onto the road, gave it some gas and it was like it had no power at all and could barely accelerate itself but then as soon as it hit 2nd gear power was back to normal, did this a couple times that day and hasn't since.

She's been a great ride but I think she may be on the downward slope.

RamTech 07-23-2010 07:51 AM

Most likely it's a gear noise.

Toms Blue Ram 1500 07-24-2010 11:40 AM

Sounds like a differential noise . Check and see if you have any play in the differential yoke .

jchevelle70 07-26-2010 06:08 PM

I have a 1999 ram 2500 and mine is doing it also.
Mine seems to do it when it shifts. Almost sounds like there is a cat under the hood! It has been doing it for over a year now though so I'm not to concerned about it.

sincebeen 09-27-2011 12:39 PM

The answer:

Gen1dak 09-28-2011 04:38 PM

Hate to say it, but it sounds like bearings in the overdrive section, yes, even in third gear.

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