2003 M45 Whine on Cold Start

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
MSeries61996
Posts: 22
Joined: Sat Dec 02, 2017 5:05 pm
Car: 2003 Infiniti M45 (Y34)

2003 M45 Whine on Cold Start

Postby MSeries61996 » Sat Apr 18, 2020 9:50 pm

Hi guys, I'm getting a new sound from the M45 :(
Here's the situation:
About 30 seconds into a cold start, I get a whine and low hum from the top, front timing cover area on the passenger side. The sound subsides after the car is about halfway into warming up.

After short periods of running the car from a cold start with both the drive belt and the power steering belt OFF of the car
I have determined that it is NOT a pulley, AC Compressor, Alternator, Water Pump, or Power Steering pump. As both belts being off has no effect on the noise, I am beginning to wonder if it is an issue with the timing chain/guide/tensioner or possibly a clogged oil jet for the timing chain?
I am finding no answers and no help so even the smallest suggestions are greatly appreciated.
Thanks a bunch.


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Ilya
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Posts: 8972
Joined: Fri Apr 23, 2010 11:20 pm
Car: 2011 M56x but I spend a lot of time on my 2015 Kawasaki Vulcan S. Former owner of a 2007 M35x. Also take care of my wife's 2016 QX60.
Location: Albany, NY
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Re: 2003 M45 Whine on Cold Start

Postby Ilya » Sun Apr 19, 2020 7:10 am

Being that it is a V8, this sounds similar to the M56 V8. See my video here:

https://www.youtube.com/watch?v=PvbM42SaFFA

Does it sound similar. Read the thread in the description for more discussion.

MSeries61996
Posts: 22
Joined: Sat Dec 02, 2017 5:05 pm
Car: 2003 Infiniti M45 (Y34)

Re: 2003 M45 Whine on Cold Start

Postby MSeries61996 » Sun Apr 19, 2020 3:20 pm

No not really. At first I thought it was something belt driven, but after removing both the PS belt and main drive belt, I now know it's not.
Here is the sound
https://youtu.be/He13EprpMSI

Iavoidedmakingthis
Posts: 13
Joined: Thu Feb 06, 2020 2:49 pm
Car: '06 M35X

Re: 2003 M45 Whine on Cold Start

Postby Iavoidedmakingthis » Mon Apr 20, 2020 9:41 am

Bad starter or air conditioner

JJM158
Posts: 25
Joined: Mon Sep 02, 2019 7:25 pm
Car: 2007 Infiniti M35 S

Re: 2003 M45 Whine on Cold Start

Postby JJM158 » Mon Apr 20, 2020 6:44 pm

My car also whines only when temp is in teens or below on cold starts (north area) and engine rattle as well under 40 degrees any suggestions? Could be piston slap.... but goes away after a few minutes


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