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Intriguing Noise
Hello to all.
I have been looking around the forum for a while and have gotten many ideas from it, but time has come to ask for advice. I have a 88 carrera, 87k miles on it. Here is the issue ![]() When the car is taken for the first drive of the day ![]() ![]() Any Ideas Thanks to all for your comments. ![]() |
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Does the "hum" change with wheel speed? It might be a wheel bearing noise that goes away when the bearing heats up a little? Turning right loads up the left front wheel bearing...
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Mike 1976 Euro 911 3.2 w/10.3 compression & SSIs 22/29 torsions, 22/22 adjustable sways, Carrera brakes |
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Good point, on the loading up the left front, On your question about the speed, it seems as if once it warms up it dissapears, One interesting thing was that i now have 15" fuchs and I used to have 17" BBS's and it did not hum with the 17"
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Join Date: Jan 2006
Location: Santa Barbara, CA
Posts: 2,307
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Ah, the famous 15" Fuchs hum. Sure sounds like a wheel bearing to me. Why not pull the left side, look at the bearings and repack it if it seems ok... see if anything changes? Obviously you'll replace it if it is shot.
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jhtaylor santa barbara 74 911 coupe. 2.7 motor by Schneider Auto Santa Barbara. Case blueprinted, shuffle-pinned, boat-tailed by Competition Engineering. Elgin mod-S cams. J&E 9.5's. PMO's. 73 Targa (gone but not forgotten) |
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Member 911 Anonymous
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+1 Bearings, check if they are loose.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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Oh so it seems that 15" Fuchs hum, maybe they are intended to be used when the radio is shot!!!
Will take a look at the wheel bearing and repack or replace as needed. Took a look at the Haynes book and seems a pretty simple DIY. Thankls |
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