Hi All,

I have a buzzing noise (sometimes intermittent) coming from the rear hatch when the car is idling. I could really hear it when I put my ears next to the rear wheel wells and/or inside the hatch compartment near the strut bar. I am guessing that the noise is coming from the fuel tank perhaps the fuel pump or the pressure regulator. I removed everything in the hatch area and located the noise to be coming from underneath the car.

Could some one verify that this noise is normal? I really don't want to waste another Saturday at the dealership, just like last week for some warranty services ( 5.5 hrs). BTW, I only have 4000 miles.

Thanks

 

does that sounds like a leaking air from the tire?
i have tht sound comin from under my Z

 

I don't think it's the tires because the pressure readings are all okay. It's definitely coming from under the car where the fuel tank is located. It's not the differential b/c I was not moving. The car was at idling. If you also hear the sound then perhaps, I will just cancel my appt. with the dealer. BTW, I am not really happy with Nissan's service so far.

Thanks for your inputs... Anybody else?

 

i have tht wierd sounds comin under neath my car... sounds like the fuel pump or exhuast not sure.
i went bak to the dealer n check. they say is normal .....

 

Well, just you wait. I can hear it without putting my ear close to any of the places that you named. It just gradually gets louder... it's so audible from both inside and outside the car... I can hear it over my music. Yet I hear that it is normal.....

My future cousin-in-law (works at a BMW dealership) said that the internal fuel pumps on some BMW's made the buzzing noise and are promptly replaced under warranty (the entire tank and assembly). About five or so hours worth of work. Wish that Nissan had such levels of service. In any case, if my safety is ensured then I guess I can live with it.

 

This past Saturday I went to the dealership and had them start up two other 350Z, a Track and Touring model. Both did not exhibit any of the buzzing noise. I should have left my car there to let them fix it but I did not want to waste a perfectly good Sat. waiting at the dealership. So I left. While I was driving home I noticed the noise was getting louder.

I don't know what to think of this anymore? Should I drive it anymore? Is it safe? Wouldnt the ECU detect the problem if the fuel pump/regulator is faulty?

 

Did they say that they would fix/replace it? If so, this is a first. If they do it, I want mine replaced too.

 

did they told u wuts tht buzzz noise? all about
is tht normal or is will cause a prob.....

 

Funny thing this came up because I have the same buzzing/humming noise coming from my rear hatch area at idle. It just started last week. I am under the impression it is the fuel pump, but I really have no idea. I just don't want it to get louder. I have 27k miles on the car.

 

i had the problem start two weeks ago, and the car just turned one month old today.

 

They said that they will look at the problem. I just didn't want to waste my Saturday there. The noise was not as loud at then so I left. It just so happened that the noise got a lot louder when I got home. I can now hear it over the radio at moderate volume. Now I am worried. I am going to make an appt. with them tomorrow.

I really don't have time for this S**T. This will be my 3 rd time at the dealership and wasted almost 10 hours of my valuble time ($265/hr). I want to sell my car so I don't have to deal with Nissan's service dept again. I want know how what kind of quality control if any, was in place when new cars are being sold with grease marks on both side windows. This is unacceptable IMO. BTW I only have 4000 miles after owning the car for a little bit over a year. I will lose like 7 grand if I sell it right now.

Sorry about the ranting.

 

got mine for 3 month but prob seem to be appear
buzzin sound, aligment pullin to the right , rear shock ........
all this sH** waste my time at the dealer.

Z is a great car but seem to be a lot of prob......

 

I just noticed the same noise coming from the rear of my car a couple days ago. It is intermittent as you said, and I can actually hear it inside the car coming from the rear. My first thought was that it was the fuel pump. Hopefully this doesn't become something that is unbearable. Please update this post with any solutions or comments anybody has received from the dealer. Thanks....

 

yep i have that noise

 

I just noticed the same noise coming from the rear of my car a couple days ago. It is intermittent as you said, and I can actually hear it inside the car coming from the rear. My first thought was that it was the fuel pump. Hopefully this doesn't become something that is unbearable. Please update this post with any solutions or comments anybody has received from the dealer. Thanks....

 

So at $265/hr it will only take you 3 days to work off $7000, what are you doing slumming with such a cheap car?

 

goooooooooood point.

But I think he means that he's a consultant. I get billed at $200/hr but I only see 20% of that.

 

I have the fuel pump noise in my car, and can also hear it over low music (04 enthusiast). Outside the car, by the rear wheels, it sounds like intermittent hissing from air being let out of tires (though this is obviously not the case, it just sounds similar). I have to assume this is normal.

 

I have that same noise coming from inside my and can also hear over the music. Take mine in on monday 10-8 for this and other things

 

It comes and goes... this morning, nothing. Day before yesterday, nothing. Some days... BUZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ...

So forget about duplicating the problem (in my case). I don't think that problems like this just fix themselves, but one can always hope.