R56 Squeal at idle from time to time
#1
Squeal at idle from time to time
My car produces a squeal from time to time specially when i push it to the limits ..the squeal only appears at idle or at the second i remove my foot from the pedal it happens with the exhaust burbs and pops..but not when am travelling the car is bone stock FJCW 2009
#3
Could the 'squeal' be the diverter valve opening up to relieve the boost pressure? It is more of a whistle that decays. At high RPM and high load, the turbo is flowing a bunch of air. When the throttle is closed, the excess flow goes through a diverter valve to bleed off the pressure.
Does this sound like a good description of what you hear? I'm not sure about the noise at idle, though.
Mike
Does this sound like a good description of what you hear? I'm not sure about the noise at idle, though.
Mike
#4
Could the 'squeal' be the diverter valve opening up to relieve the boost pressure? It is more of a whistle that decays. At high RPM and high load, the turbo is flowing a bunch of air. When the throttle is closed, the excess flow goes through a diverter valve to bleed off the pressure.
Does this sound like a good description of what you hear? I'm not sure about the noise at idle, though.
Mike
Does this sound like a good description of what you hear? I'm not sure about the noise at idle, though.
Mike
#7
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#8
Mine only squealed from time to time at idle when the pump was bad. Didn't necessarily seem to coincide with particularly hard driving, but did seem to coincide with fairly long periods of high load (ac on, driving up a hill, etc.). There are some videos of bad pump sounds here that you can use for comparison: https://www.northamericanmotoring.co...l-at-idle.html
--Matt
--Matt
Last edited by mattkosem; 07-08-2013 at 04:17 PM.
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#18
Hummm.. well knowing you replaced those items it makes me wonder if it is even a belt squealing.. If it is the belt still squealing..it is possible your belt tensioner has lost some of its tension! thus your belt would slip on occasion.. Does it sound like the squealing is coming from that side of the car? The belt area?
#19
Yep, I would check the tensioner and the friction wheel to determine the squeak , if the belt and pump are ok. If you can pull out the wheel well cover on the passenger side and listen through there you might be able to hear it better, then determine the location.
Mechanical Belt Tensioner Part number 11287571015
http://www.ecstuning.com/Search/SiteSearch/11287571015/
Friction Wheel Part number 11287598833
http://www.ecstuning.com/Search/SiteSearch/11287598833/
Here is a side shot of the engine.
Thanks
Mechanical Belt Tensioner Part number 11287571015
http://www.ecstuning.com/Search/SiteSearch/11287571015/
Friction Wheel Part number 11287598833
http://www.ecstuning.com/Search/SiteSearch/11287598833/
Here is a side shot of the engine.
Thanks
__________________
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Milltek | Genuine MINI | Forge Motorsport | NM Engineering | ECS Performance | M7 Speed
Customer Service Hours: 8am-8pm EST|Sales Team Hours: 8am-11pm | SAT 10am-7pm 800.924.5172
MINI Guru/ MINI Owner Since 2004 | NEW Lifetime Part Replacement | Local Pickup
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Customer Service Hours: 8am-8pm EST|Sales Team Hours: 8am-11pm | SAT 10am-7pm 800.924.5172
#20
Yep, I would check the tensioner and the friction wheel to determine the squeak , if the belt and pump are ok. If you can pull out the wheel well cover on the passenger side and listen through there you might be able to hear it better, then determine the location.
Mechanical Belt Tensioner Part number 11287571015
http://www.ecstuning.com/Search/SiteSearch/11287571015/
Friction Wheel Part number 11287598833
http://www.ecstuning.com/Search/SiteSearch/11287598833/
Here is a side shot of the engine.
Thanks
Mechanical Belt Tensioner Part number 11287571015
http://www.ecstuning.com/Search/SiteSearch/11287571015/
Friction Wheel Part number 11287598833
http://www.ecstuning.com/Search/SiteSearch/11287598833/
Here is a side shot of the engine.
Thanks
#22
That sounds quite a bit like what I noticed when my water pump failed. I linked a thread above with a video covering what I was hearing. Here's a direct link to that video:
--Matt
--Matt
#23
That sounds quite a bit like what I noticed when my water pump failed. I linked a thread above with a video covering what I was hearing. Here's a direct link to that video:
Video Link: https://www.youtube.com/watch?v=FQI_54tsoEI
--Matt
Video Link: https://www.youtube.com/watch?v=FQI_54tsoEI
--Matt
#24
Were you able to get that sound down near the wheel well ? Were you able to remove the cover and crank the engine over to pin point the squeal?
Thanks
Thanks
__________________
MINI Guru/ MINI Owner Since 2004 | NEW Lifetime Part Replacement | Local Pickup
Milltek | Genuine MINI | Forge Motorsport | NM Engineering | ECS Performance | M7 Speed
Customer Service Hours: 8am-8pm EST|Sales Team Hours: 8am-11pm | SAT 10am-7pm 800.924.5172
MINI Guru/ MINI Owner Since 2004 | NEW Lifetime Part Replacement | Local Pickup
Milltek | Genuine MINI | Forge Motorsport | NM Engineering | ECS Performance | M7 Speed
Customer Service Hours: 8am-8pm EST|Sales Team Hours: 8am-11pm | SAT 10am-7pm 800.924.5172
#25