Vibrating noise around 3000 rpm
#1
Vibrating noise around 3000 rpm
I have a 07 g35 coupe 6mt. Recently, I started noticing a strange vibrating noise (low frequency and pronounced) when accelerating and reach around 3000 rpm. It starts at then and continue till like 4000 I think. My initial reaction was that it felt like something was loose in the cabin. But after making sure nothing is, the noise is still there. I am still not sure if it is coming from the cabin or engine bay.
It only happens when car is moving and not in neutral. And I mostly noticed it when going uphill.
Any ideas? Whats the worst it can be?
And my oil is not low and it is not the infamous engine pinging between 2500-3000 rpm. Could it be because of drive belts going bad? I need to replace them real soon.
And yeah there is no loss of power at any time.
Responses appreciated!
It only happens when car is moving and not in neutral. And I mostly noticed it when going uphill.
Any ideas? Whats the worst it can be?
And my oil is not low and it is not the infamous engine pinging between 2500-3000 rpm. Could it be because of drive belts going bad? I need to replace them real soon.
And yeah there is no loss of power at any time.
Responses appreciated!
#3
I don't think it is metallic. Its like "took took took". Yeah its pretty hard to tell just from description.
I am just trying to get a feel if it serious (i.e. something wrong with engine) or not? Since I don't hear it while stationary, I am assuming my engine should be all good and it shouldn't be a major thing, right?
I am just trying to get a feel if it serious (i.e. something wrong with engine) or not? Since I don't hear it while stationary, I am assuming my engine should be all good and it shouldn't be a major thing, right?
#4
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#6
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Gary
#7
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#8
I don't think it is metallic. Its like "took took took". Yeah its pretty hard to tell just from description.
I am just trying to get a feel if it serious (i.e. something wrong with engine) or not? Since I don't hear it while stationary, I am assuming my engine should be all good and it shouldn't be a major thing, right?
I am just trying to get a feel if it serious (i.e. something wrong with engine) or not? Since I don't hear it while stationary, I am assuming my engine should be all good and it shouldn't be a major thing, right?
#10
Thanks for the help!
#11
I figured out what compression rod is and the details. The TSB seems to apply to seden (http://trueler.com/wp/wp-content/upl...ITB08-013a.pdf). Is there any other TSB for coupes?
#12
Thanks for the replies guys.
Here is what I have done till now:
- License plate good. I don't even have one on front.
- I don't think it is exhaust because the noise just started recently and definitely not metallic.
- As for other noises, oh yeah there are tons of them at any time. But I still get worried when a new one starts.
- Finally, I took the car to a mechanic the other day and he drove the car with me. Guess what, no noise at all! He drove around for 10 mins and nothing. I swear I heard that noise while I was driving over to him. But the good news, I haven't heard it since either. I think it could have been the passenger seat and with me sitting on it put it back in its place or whatever. But I still don't think it sounded like a seat.
I will continue to monitor and listen closely for the noise. Hopefully, it won't come back. If it does, I will update you guys again.
Here is what I have done till now:
- License plate good. I don't even have one on front.
- I don't think it is exhaust because the noise just started recently and definitely not metallic.
- As for other noises, oh yeah there are tons of them at any time. But I still get worried when a new one starts.
- Finally, I took the car to a mechanic the other day and he drove the car with me. Guess what, no noise at all! He drove around for 10 mins and nothing. I swear I heard that noise while I was driving over to him. But the good news, I haven't heard it since either. I think it could have been the passenger seat and with me sitting on it put it back in its place or whatever. But I still don't think it sounded like a seat.
I will continue to monitor and listen closely for the noise. Hopefully, it won't come back. If it does, I will update you guys again.
#13
#14
Like I said it's probably the compression rod bushings. Since you're out of warranty, it's going to cost you. You can buy the bushing on ebay for about $25 a piece. But Labor is going to cost you.
As far as TSB goes, There are over 90 of them for the coupe. Actually over 400 for the 03-07 combined.
As far as TSB goes, There are over 90 of them for the coupe. Actually over 400 for the 03-07 combined.