Passat (B6) :: Pulsing / Rhythmic Sound When Going Above 50 MPH
May 2, 2011
I need to determine what this sound is. We just got an 07 Certified Pre-Owned Passat with about 30k miles on it. We've noticed a pulsing, rhythmic sound when going above 50mph. Some observations:
The sound starts literally at 50mph and is present at any speed above that.Sound is speed insensitive. It is a constant rhythm at any speed above 50mphSound is NOT present when in Park and revving the engine ( I think this rules out the turbo, not sure)Downshifting to 5th and 4th gear does not make the sound go away
I'll list some more if I think of any. I'm a noob with the 2.0T but have the tiptronic transmission in my MKV Rabbit and have never had any issue like this one.
Here's a video I recorded: [URL] ....
I suppose I should've started filming at 50mph, as opposed to a constant 80 in the video. The sound is the same though. You should be able to hear it starting in the first 10 seconds. The sound at 40 seconds is just me rolling down the windows.
Last week the breather valve was replaced because it got stuck and was making a whiney whistling sound. Dunno if that would be related.
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[URL] ....
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I have recently noticed a noise... to describe it would be difficult, but I'll give it a shot. There is a pulsing sound, maybe coming from my front left wheel area? It happens when I turn left driving, even on the smallest curve. From what I can tell, the pulsing sound does NOT change speed when I speed up or slow down. My initial thoughts were a bad wheel bearing, but I'm not so sure. Could it be power steering?
My Kia does have 130000 miles on it, and I just purchased it used a year ago, so I'm not exactly sure what maintenance or repair has been done on it.
2005 Kia Sorento LX 4x4
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The road conditions in this video are completely dry with an outside temperature in the high 70's.... YouTube .....
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-Rotated both front tires to rear
-Inspected the tires while rotating and saw nothing out of ordinary
-Checked the pressure and everything's good.
-All lug nuts torqued to spec
-Visual inspection of brake rotors and calipers seems fine
The car has 34k miles on it and the tires are in good condition although there's about 1/8 - 3/16" usable tread left. What could this be?
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I have a '97 Saab 900 SE turbo. When it made a new rhythmic knocking noise under the hood I brought it to a few mechanics and here's what they found: the alternator's bearings are loose (that was likely the source of the noise) and it also needs the tensioner assembly (it's vibrating visibly) and idler pulley replaced. The battery was also bad, with a 17.6 meter reading (handheld meter). The battery was still under full warranty and my mechanic said it probably had one, maybe two dead cells. Never had a problem starting or running.
My question is this: how likely is it that the bad battery caused the alternator/tensioner/idler problems?
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