On my 24 F350 7.3 Tremor
At around 270 miles I started noticing a high-pitched whirring sound when above 20mph. It changes with road speed and is not affected by what gear the truck is in or how fast the engine is turning. It is not tire noise as it does not change if on dirt or different surfaces. It sounds a lot like rough roller bearings whirring. It is easy to hear it if driving next to a wall or if I open the rear sliding window. The sound does not change much based on acceleration or maintaining speed, but you can hear it when decelerating down to about 10mph.
My 2019 F250 6.7 with a 3.31 rear end definitely did not sound anything like this. It had a minor whine if you just got off the throttle at highway speed. The whine would go away under any type of load either acceleration or deceleration. I have noticed this on many Fords, and I think it is a "normal" gear noise.
I also notice on a 45-degree F morning that the rear differential on my 24 is about 130F at the pinion gear area after driving 7 miles to work averaging maybe 40 mph. I was pretty surprised the rear axle could even warm up in such a short distance. It seems like a lot of metal to heat up in 7 miles with no load. I just have nothing to compare to at the moment since I traded my 2019 in.
I am still babying the truck during the break-in period.
Do these Sterling 11.6 4:30 axles just make a lot of noise? The main thing that is bothering me is I was sure it was dead quiet up until a few days ago.
The dealer I purchased from is about 70 miles away. They want me to drive it in to them next week to have it looked at.
At around 270 miles I started noticing a high-pitched whirring sound when above 20mph. It changes with road speed and is not affected by what gear the truck is in or how fast the engine is turning. It is not tire noise as it does not change if on dirt or different surfaces. It sounds a lot like rough roller bearings whirring. It is easy to hear it if driving next to a wall or if I open the rear sliding window. The sound does not change much based on acceleration or maintaining speed, but you can hear it when decelerating down to about 10mph.
My 2019 F250 6.7 with a 3.31 rear end definitely did not sound anything like this. It had a minor whine if you just got off the throttle at highway speed. The whine would go away under any type of load either acceleration or deceleration. I have noticed this on many Fords, and I think it is a "normal" gear noise.
I also notice on a 45-degree F morning that the rear differential on my 24 is about 130F at the pinion gear area after driving 7 miles to work averaging maybe 40 mph. I was pretty surprised the rear axle could even warm up in such a short distance. It seems like a lot of metal to heat up in 7 miles with no load. I just have nothing to compare to at the moment since I traded my 2019 in.
I am still babying the truck during the break-in period.
Do these Sterling 11.6 4:30 axles just make a lot of noise? The main thing that is bothering me is I was sure it was dead quiet up until a few days ago.
The dealer I purchased from is about 70 miles away. They want me to drive it in to them next week to have it looked at.
