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#1
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Strange sound when speeding over 80 MPH
Hey guys,
I have a 96 E320 with the M104 engine and a 4 speed. I have had a strange sound that is barely noticeable for a while and was hoping someone may have any ideas as to what it may be. Here is the scenario. When I drive on the freeway at speeds at or over 80 MPH I hear a very faint sound. It almost sounds like a low frequency grumble. The thing is, when I lift off the gas it goes away. If I press on the gas the sound comes on again. I thought it was the tires so when I got a new set I listened and it's still there. There is no noticeable vibration but only sound. I don't think it's the tires or balancing on them. I replaced the transmission and front flex disc about a 4,000 miles ago and the sound was there before this too. Who knows maybe it was always there and I just didn't notice it. Does anyone have any ideas?
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2010 W212 E350 Sport 1996 W210 E320 (220K miles) |
#2
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Quote:
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95 E300D working out the kinks 77 300D, 227k, station car 83 300CD 370k, gone away 89 190E 2.6- 335k, no more 79 VW FI Bus- 145k miles, summer driver 59 VW Beetle ragtop- 175k miles 12 VW Jetta- 160k miles |
#3
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I rarely drive this fast. That may be the reason I didn't notice it earlier.
On a lonely stretch of highway where the next town is more than 50 miles away doing 80 is following the flow of traffic.
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2010 W212 E350 Sport 1996 W210 E320 (220K miles) |
#4
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I am not suggesting you go out and replace your exhaust system, but I have the m104 engine also and my car does the same thing ... I always just assumed it was either something with the exhaust system or just the way the car is
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1994 E320, 145,000 miles |
#5
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If it is just the exhaust I'm not gonna worry about it but I'm more concerned about safety issues if any at all.
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2010 W212 E350 Sport 1996 W210 E320 (220K miles) |
#6
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Does it sound like sirens? Do you notice any flashing lights in the rear view mirror? I've had that issue before, it's an expensive problem to fix.
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-tp 1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS 1988 560SEL "Gunther"- 190K passes anything except a gas station 1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition |
#7
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yea i notice it at the same speed as you and i believe same rpms
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1994 E320, 145,000 miles |
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