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Old 06-01-2007, 09:12 AM
Registered User
Join Date: Aug 2006
Posts: 127
Loud whinning sound

I just got my new 79 300SD on the road. What a joy to drive! Anyway, after about 5 miles of highway driving I start getting a loud whinning sound. It will go away if I let off of the accelerator and it kind of changes if I swerve the car. Does this sound like a wheel bearing? I'm gonna check the differential fluid tomorrow and take a look at the carrier bearing too. It's taken longer than I expected to get this progect on the road, I thought I was there but just not yet.... Thanks.

1983 240 D-SOLD
1979 300SD
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Old 06-01-2007, 10:49 AM
Admiral-Third World Fleet
Join Date: Feb 2002
Location: Central FL
Posts: 3,068
those are good places to start. Maybe the power steering pump is worth a look at too(?)

So, you got your transmission back together OK? - it works/shifts well in all gears?

80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)
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Old 06-01-2007, 10:59 AM
MattBelliveau's Avatar
Gotta another one...
Join Date: Jun 2005
Location: NE Ohio
Posts: 1,685
Afterward, check your door/window seals.
1989 300E 144K
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Old 06-01-2007, 02:45 PM
Registered User
Join Date: Aug 2006
Posts: 127
Tranny is back together ok and is shifting smooth. It's not window seals as I had all the windows down.

1983 240 D-SOLD
1979 300SD
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