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#1
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1992 190E humming/vibration at highway speeds
My 190E is not quite the smooth highway cruiser it used to be. There is a hum at highway speeds. It sounds like someone blowing air around the top of a beer bottle (like a flute). From my experience, the sound from a wheel bearing is slightly lower pitched. It is not a constant hum either. Even if you maintain a steady speed, the hum has volume fluctuations. It starts at around 100 km/h and at 110 km/h the noise starts to get less loud. At 120, you can still hear it a bit but not as much as 100. There is also a vibration that seems to appear at 130 kmh. The car used to be able to cruise at higher speeds with absolutely 0 vibrations.
Also note that: -I replaced the 2 front wheel bearings. One was shot. The noise remains. -The 2 rear wheel bearings don't have any play and don't seem to get hot after driving for a while. -I tried to change the diff oil but the drain plug is stuck! I tried the impact on it and it won't bulge! But when you open the fill plug, oil comes out. So at least it has some oil in it... -I also changed the driveshaft bearing and the carrier. The bearing was so-so but the rubber carrier was blown. The noise is still there. BUT I might have put the driveshaft back on with one spline off... I think I did it right, but not absolutely certain. I plan on dropping the rear subframe when I put the car in storage in a month. Do the bearings, bushings, diff r&r, etc... |
#2
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speedo cable?
A speedo cable that's faulty can cause a hum and vibration. There no cure for it other than replacing it. it a relatively cheap and easy DIY fix.
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03 CLK430 Cabrio 211K Pweter Silver/ Oyster Leather 90 300SEL 214k Pearl Black/ Alto Grey/Black Leather Prior: 85 190E, 88 300TE, 89 300TE, 90 300E 2.6, 90 300TE, 92 300E 2.6, 91 and 93 300SL, 87 Ferrari Mondial Cabrio |
#3
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Really? Actually at certain speeds the gauge's needle bounces up and down. Where does it plug in? At the transmission?
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