Heading to the garage to take off the rear passenger wheel to see what is causing the whine.

What exactly does this completely-new-to-auto-mechanics-before-www.peachparts.com-guy look for?

Also, in case of worst case scenario, will the rear axle of a 1986 300d fit on my current 1980 300sd?

Thanks.

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79 300SD - $50 out of pocket purchase
03 Dodge Ram 3500 CTD
2003 VW Jetta TDI

at what speed are you hearing the whine? the rear ends on these cars are known to whine at speeds at or above 55 mph if i recal correctly

Nope, slowing and turning right. Guess I should have mentioned that.

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79 300SD - $50 out of pocket purchase
03 Dodge Ram 3500 CTD
2003 VW Jetta TDI

Anyone?

Took me longer to find the garage that I thought....going to do it tomorrow.

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79 300SD - $50 out of pocket purchase
03 Dodge Ram 3500 CTD
2003 VW Jetta TDI

Not sure what you consider a whine, but if your hearing it on loading and unloading corners (turning) it usually points to a wheel bearing. I've always referred to it as a roar or hum. I've got a rear diff that whines though
See if you can stop and start the sound by turning the car.

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04 VW TDI Passat 80,000mi
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