2007 infiniti m35 Engine noise: Unable to replicate for mechanics

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
justmag
Posts: 4
Joined: Thu Dec 07, 2017 7:19 am
Car: 2007 Infiniti m35x

2007 infiniti m35 Engine noise: Unable to replicate for mechanics

Postby justmag » Tue Oct 27, 2020 10:26 am

Guys! I need your help.

I have a 2007 infiniti m35x

For the past couple of weeks I have been getting this strange noise coming from the engine. Seems like it's coming from the front. This noise is hard to replicate because it only occurs after driving for like 2 to 5 mins or longer sometimes. Somedays I could drive and the noise is not there at all. If I shut off the engine and start it again it disappears and returns only after driving the car again. Initially I thought it could be a bearing in one of the pulley

What have I done so far?

1. I have taken the car to about three mechanics because they cant replicate the issue.

2. One mechanic checked the belts and pulley. He noticed some play in the ac compressor pulley. He took off the AC compressor belt and I drove without it but the sound came back the next day (which is today). He did this to try an isolate the noise and see where it could be coming from.

3 the noise comes on with or without the ac on. Which made me believe it may not be the ac compressor

4. One strange thing I notice is that if I switch from D to N and reverse the noise disappears.

5. I dont believe this is a power steering issue because if i turn the steering wheel. The sound is still there at a consistent volume. I have had powering steering issue before and it doesnt sound like this. I already changed the whole powering steering rack like two years ago. And the fluid level is normal. I could also be wrong about this completely.

I am just clueless and need opinions or advise in case someone has experienced this before.

Please see video below for the noise.

Last edited by Ilya on Wed Oct 28, 2020 10:16 am, edited 1 time in total.
Reason: Fixed YouTube link


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Ilya
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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: 2007 infiniti m35 Engine noise: Unable to replicate for mechanics

Postby Ilya » Wed Oct 28, 2020 10:17 am

Hmm...that definitely sounds like something in the belt/pulley area but I'm surprised the mechanics can't replicate it. Does it seem to happen more/less with temperature changes?

justmag
Posts: 4
Joined: Thu Dec 07, 2017 7:19 am
Car: 2007 Infiniti m35x

Re: 2007 infiniti m35 Engine noise: Unable to replicate for mechanics

Postby justmag » Wed Oct 28, 2020 12:03 pm

Many thanks for responding. It is kind of confusing to be honest. From what I have noticed so far It happens regardless of temperature but it seems to happen less when it is cold. It is hard to replicate, that is the problem. Today for example I drove for about 10 minutes and the noise was not there. I drive the same distance /path every day and I hear it some days and some days It is never there. One thing I am certain of is that the noise only comes after driving and once I shut the engine off and restart it it is gone till I drive again.

User avatar
Ilya
Moderator
Posts: 9205
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
Contact:

Re: 2007 infiniti m35 Engine noise: Unable to replicate for mechanics

Postby Ilya » Thu Oct 29, 2020 10:02 am

Maybe it's not so much temperature but moisture related...? Where are you located?

justmag
Posts: 4
Joined: Thu Dec 07, 2017 7:19 am
Car: 2007 Infiniti m35x

Re: 2007 infiniti m35 Engine noise: Unable to replicate for mechanics

Postby justmag » Thu Oct 29, 2020 10:09 am

I am in Ontario, Canada. Yesterday the noise came back and it Seems to be a little louder. I took a closer recording of the engine. I still cant figure it out. So far I have the ac compressor belt off because the mechanic said he heard some play in the pulley. But the noise is still there.

https://youtu.be/3QLVOQBdpgI


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