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#1
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Soft metallic ringing on acceleration
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#2
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Sorry, my car is 2005 3.0
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#3
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Totally different vehicle I know but I had the “same” problem with my wife’s Buick Enclave, in gear, under acceleration, usually accelerating away from a stop light or goosing it in to passing gear on the freeway it would give me a low, “far off” metallic sound like a small ring or hum even, very low though almost imperceptible if you didn’t know it was there.. I ended up tracking it back to the connection between the downpipe and the flex pipe that connects to the catalytic converter. I soaked the bolts in PB Blast, let them soak for a couple of hours then soaked them again over night, hit them with some gear and chain lube and then tightened them about a quarter of a turn, maybe slightly more and that fixed it. Only thing I can think of is that heating and cooling that joint loosened up the seating and tightening it up a bit snugged everything back down.
Annoying as heck I know, good luck getting yours figured out 2005 X5 4.4i (04/05 build date) Titanium Silver w/Black Interior |
#4
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There was an old thread on something similar but it may have been in the e70 thread and it was in the rear differential if I remember correctly. I'll try to find it again.
Sent from my SM-A730F using Tapatalk
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"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course |
#5
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Quote:
Not sure that this is the OP's issue...
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#6
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There are worse things than dry balls
Sent from my SM-A730F using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course |
#7
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Watch this at 0:17.
https://www.youtube.com/watch?v=ZWAol58HgMg If that's the noise yours is making it turned out to be the rear driveshaft flex disc (guibo) or the center support bearing. I did a complete service on the front and rear driveshafts after living with that sound for a couple of years. Has never been back.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) |
#8
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CW - yep, that's the exact sound the rear CV (at the front to the rear diff - on the rear end of driveshaft) makes when it goes dry. Did you replace or re-pack this CV when you serviced the driveshaft?
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#9
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No I did not. I heavily copper greased the front centering sleeve/bearing on the TC rear output shaft (the original had seized on there and took a week to remove). Replaced the guibo/flex disk and the center support bearing. I examined the CV and took it to the shop I used to work at. Owner manipulated it and said not to mess with it, looked good. So I threw it all back in and have had a noise free drive train ever since.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) |
#10
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No, i don't have the noise described from the video. Mine is more like the pinging noise that you experienced from detonation but a lot softer. In detonation pinging, the more you accelerated, the worst/louder the pinging. in my case, the soft pinging stayed the same, especially if you maintain cruising speed at 60-70 MPH. if I accelerate harder to pass, the noise actually went away. So under the hood, while cruising steadily at the above speed, what parts or areas could caused the soft ringing? could it be the idle control valve? or pulleys? btw, i already changed the tensioner and the alternator pulleys. I didn't change the compressor pulley as yet. I plan on doing it next. In addition, both of my flex disks are still good - no noise when you put the car in D or R.
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