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Noise in 1st/2nd - NOT clunk, clank, whine

I've done several searches using Google on the site, and I have not really seen this one. I know about the clank/clunk from 1st to 2nd, and I know what

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Old 05-16-2011, 10:32 AM   #1 (permalink)
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Default Noise in 1st/2nd - NOT clunk, clank, whine

I've done several searches using Google on the site, and I have not really seen this one.

I know about the clank/clunk from 1st to 2nd, and I know what "gear lash" (that whining noise) is and this isn't about that, and trust me, I'm not bitching about a little noise here and there in a sports car, just not familiar with this one... Here's the best I can describe it.

It's kind of a pulsating, "pfft" sound, almost like an exaust leak at the manifold on 1 cylinder, if you have ever heard that, and it changes with engine RPM.

How to make it happen/hear it:

- Rolling along slowly in 1st or 2nd gear, coasting, then step on the gas *lightly* at about 2000 RPM

- You can hear it better with the driver's window down

- I mainly hear it in my neighborhood pulling away from a stop really slow (25 is fast around there) or creeping through a parking lot.

- I have never noticed it when the car was cold, definitely every time I have heard it, the car has been hot/driven for 1/2 hour+, but I don't know for sure that it doesn't do it cold.

- It's pretty quiet and if you get into the throttle or the engine revs above 2300 RPM or so I can't hear it anymore, but my hearing is not the best.

Does this sound familiar? Could it be the injectors?

Thanks for any serious replies.
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Old 05-16-2011, 10:35 AM   #2 (permalink)
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my best advise is to record a video or sound clip and post it to youtube so we can actually hear it. it's pretty hard to describe sounds accurately enough to have anyone diagnose your problem.
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Old 05-16-2011, 10:38 AM   #3 (permalink)
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I appreciate the response.

If there is actually a problem I will take it to the dealer - he's just a few blocks away.

I just don't want to make a trip for nothing.
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Old 05-16-2011, 10:53 AM   #4 (permalink)
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check under the hood.... someone may have installed a turbo-simulator while you were out partying.


take it into your dealer.
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Old 05-16-2011, 11:52 AM   #5 (permalink)
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Ha ha...

It doesn't sound like a turbo... I am probably just being paranoid. I remember when I noticed my 350Z's injectors after having it for a few weeks, pulling into my garage, I thought my valvetrain was coming apart.
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Old 05-16-2011, 11:54 AM   #6 (permalink)
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Is the car stock???
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Old 05-16-2011, 12:38 PM   #7 (permalink)
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Mine makes a pfft noise, but it's generally after a healthy portion of White Castles.

Where are you located? I'm in Clarksville.
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Old 05-16-2011, 01:16 PM   #8 (permalink)
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Quote:
Originally Posted by red6spd View Post
Is the car stock???
Yes, completely.

Quote:
Originally Posted by TreeSemdyZee View Post
Mine makes a pfft noise, but it's generally after a healthy portion of White Castles.


Quote:
Where are you located? I'm in Clarksville.
Indy.
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Old 05-16-2011, 02:44 PM   #9 (permalink)
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Hmmmm not sure. Just add an exhaust and you wont hear it no more K!!!!!!!!!
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