A problem that dealers don't even know

Jordo! · 05-15-2015, 10:46 PM

High pitched whine or metal-on-metal?

If the former, it's something electrical -- there used to be a known issue with "ECU whine".

There is also an occasional fuel pump whine that can be heard when shutting the car down -- it's possible that something is amiss with the pump or the switch for it. I can't recall the exact reason for the noise, but its worth checking.

If it's metal-on-metal, the brake dust shield can make contact with the caliper and cause a horrendous metal on metal screeching noise.

On inspection, nothing will be apparent and it doesn't even seem to cause any visible scoring or damage. Basically, the shield just has to be bent back a bit for a few mm of extra clearance.

Can you post a recording of the sound?

JohnYu · 05-16-2015, 12:13 AM

Quote:

Originally Posted by Jordo!

High pitched whine or metal-on-metal?

If the former, it's something electrical -- there used to be a known issue with "ECU whine".

There is also an occasional fuel pump whine that can be heard when shutting the car down -- it's possible that something is amiss with the pump or the switch for it. I can't recall the exact reason for the noise, but its worth checking.

If it's metal-on-metal, the brake dust shield can make contact with the caliper and cause a horrendous metal on metal screeching noise.

On inspection, nothing will be apparent and it doesn't even seem to cause any visible scoring or damage. Basically, the shield just has to bei bent back a bit for a few mm of extra clearance.

Can you post a recording of the sound?

I did record a audio file by using iPhone voice memo app , don't know how to post it on the forum, send me the email address I can just send the audio by email

UNKNOWN_370 · 05-16-2015, 01:59 AM

Quote:

Originally Posted by Jordo!

High pitched whine or metal-on-metal?

If the former, it's something electrical -- there used to be a known issue with "ECU whine".

There is also an occasional fuel pump whine that can be heard when shutting the car down -- it's possible that something is amiss with the pump or the switch for it. I can't recall the exact reason for the noise, but its worth checking.

If it's metal-on-metal, the brake dust shield can make contact with the caliper and cause a horrendous metal on metal screeching noise.

On inspection, nothing will be apparent and it doesn't even seem to cause any visible scoring or damage. Basically, the shield just has to be bent back a bit for a few mm of extra clearance.

Can you post a recording of the sound?

Remember the good ole days of ECU whine, rear latch issue, axle slack and oil consumption? lol That was before fuel starve, csc, etc... lol

Read T · 05-16-2015, 05:51 AM

East Charlotte Nissan?

JohnYu · 05-16-2015, 09:12 AM

Quote:

Originally Posted by Read T

East Charlotte Nissan?

yeah man

05-15-2015, 10:46 PM	#1 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 420	High pitched whine or metal-on-metal? If the former, it's something electrical -- there used to be a known issue with "ECU whine". There is also an occasional fuel pump whine that can be heard when shutting the car down -- it's possible that something is amiss with the pump or the switch for it. I can't recall the exact reason for the noise, but its worth checking. If it's metal-on-metal, the brake dust shield can make contact with the caliper and cause a horrendous metal on metal screeching noise. On inspection, nothing will be apparent and it doesn't even seem to cause any visible scoring or damage. Basically, the shield just has to be bent back a bit for a few mm of extra clearance. Can you post a recording of the sound? UNKNOWN_370 and DEpointfive0 like this. __________________ Enjoy it. Destroy it. Last edited by Jordo!; 05-15-2015 at 10:50 PM.

05-16-2015, 05:51 AM	#4 (permalink)
Read T A True Z Fanatic Join Date: May 2012 Location: Raleigh, NC Posts: 1,046 Drives: 11 Nissan 370z BC 6M Rep Power: 20	East Charlotte Nissan? __________________ 2011 Nissan 370z Black Cherry Sport Pkg - Daily Driver, , 1960 Morgan +4 fun car, 1986 BMW 325ES, 1998 M3 and 1996 Spec Miata - Race Cars SUPPORT TEAM WINSOME RACING - WRL, CHUMP, LEMONS

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