Squealing sound on cold temperatures 370z 2010

somms · 10-21-2019, 11:01 AM

Did you ever get to the bottom of this? I'm at 68k and I'm also getting squealing on cold start (but not on acceleration or AC). My mechanic replaced the pulleys, tensioner, and belts, and it's still squealing on cold start.

Now he thinks it might be a bearing going bad on the alternator or a pump. It goes back into the shop this week to find out.

370zzRed · 10-21-2019, 11:22 AM

No, the mechanics are still clueless. Seems like a mystery till now. let me know how your diagnosis goes.

somms · 10-28-2019, 03:55 PM

Finally found the squealing. It was the starter, which needed to be replaced. It's been about a week and it's not squealing anymore.

370zzRed · 10-28-2019, 04:29 PM

Cool. how much did you end up paying for the starter motor?

somms · 10-29-2019, 02:45 PM

I'd have to double check, but between $450-$500 before labor.

370zzRed · 10-29-2019, 02:57 PM

The issue with mine is not discovered yet. Going to 3rd mechanic this time. let's see.

somms · 10-30-2019, 10:12 AM

I'm not sure how much to believe my mechanic that he did this, but considering he fixed it, maybe I should: He had me leave it overnight in his shop so that they could get a solid cold start, opened the hood and had three other mechanics with stethoscopes on likely culprits to figure out where the squeal was coming from.

10-21-2019, 11:01 AM	#16 (permalink)
somms Base Member Join Date: Jun 2013 Location: Boston Posts: 131 Drives: 2011 370z SP MT Rep Power: 12	Did you ever get to the bottom of this? I'm at 68k and I'm also getting squealing on cold start (but not on acceleration or AC). My mechanic replaced the pulleys, tensioner, and belts, and it's still squealing on cold start. Now he thinks it might be a bearing going bad on the alternator or a pump. It goes back into the shop this week to find out. __________________ Fast Intentions 18 inch resonated catback, Fast Intentions resonated HFCs, Stillen Gen 3 CAI, EcuTEK tune, 311whp

10-28-2019, 03:55 PM	#18 (permalink)
somms Base Member Join Date: Jun 2013 Location: Boston Posts: 131 Drives: 2011 370z SP MT Rep Power: 12	Finally found the squealing. It was the starter, which needed to be replaced. It's been about a week and it's not squealing anymore. __________________ Fast Intentions 18 inch resonated catback, Fast Intentions resonated HFCs, Stillen Gen 3 CAI, EcuTEK tune, 311whp

10-29-2019, 02:45 PM	#20 (permalink)
somms Base Member Join Date: Jun 2013 Location: Boston Posts: 131 Drives: 2011 370z SP MT Rep Power: 12	I'd have to double check, but between $450-$500 before labor. __________________ Fast Intentions 18 inch resonated catback, Fast Intentions resonated HFCs, Stillen Gen 3 CAI, EcuTEK tune, 311whp

10-30-2019, 10:12 AM	#22 (permalink)
somms Base Member Join Date: Jun 2013 Location: Boston Posts: 131 Drives: 2011 370z SP MT Rep Power: 12	I'm not sure how much to believe my mechanic that he did this, but considering he fixed it, maybe I should: He had me leave it overnight in his shop so that they could get a solid cold start, opened the hood and had three other mechanics with stethoscopes on likely culprits to figure out where the squeal was coming from. __________________ Fast Intentions 18 inch resonated catback, Fast Intentions resonated HFCs, Stillen Gen 3 CAI, EcuTEK tune, 311whp

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10-21-2019, 11:22 AM	#17 (permalink)
370zzRed Base Member Join Date: Jan 2016 Location: Harrisburg Posts: 12 Drives: 2010 370z touring ro Rep Power: 9	No, the mechanics are still clueless. Seems like a mystery till now. let me know how your diagnosis goes.

10-28-2019, 04:29 PM	#19 (permalink)
370zzRed Base Member Join Date: Jan 2016 Location: Harrisburg Posts: 12 Drives: 2010 370z touring ro Rep Power: 9	Cool. how much did you end up paying for the starter motor?

10-29-2019, 02:57 PM	#21 (permalink)
370zzRed Base Member Join Date: Jan 2016 Location: Harrisburg Posts: 12 Drives: 2010 370z touring ro Rep Power: 9	The issue with mine is not discovered yet. Going to 3rd mechanic this time. let's see.