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Weird Car Noise - Any Ideas?

 
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Old 05-25-2011, 01:55 PM
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Weird Car Noise - Any Ideas?

My car's been making a weird noise lately and I'm still yet to discover what it is. Do any of you guys have any ideas of what it could be? Here's some videos of the noise.
Weird noise #1:
Weird noise #2:
It doesn't do it when I punch it though:
And here's the weird shakey thing. It always does it 2-3 times then stops. You may not be able to hear it but you can see the camera shake. Is this normal?:
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Old 05-25-2011, 03:06 PM
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Re: Weird Car Noise - Any Ideas?

so is it just doing it when it comes down from reving up? does it do it any other time than when it drops below 1,000 rpm like the shakes in the last vid.
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Old 05-25-2011, 03:28 PM
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Re: Weird Car Noise - Any Ideas?

well the weird buzzy noise happens when the engine hits just over 2k rpms. I know it's not my transmission though becuase it happens even when I just rev the engine.
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Old 05-25-2011, 04:00 PM
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Re: Weird Car Noise - Any Ideas?

hmm well i see in the last vid your check engine light is on. do you know why it's on have you had anyone read the codes, how old is your exhaust? is it stock or aftermarket bolt on?
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Old 05-25-2011, 04:11 PM
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Re: Weird Car Noise - Any Ideas?

It's always just randomly coming on and off. It needs to be reset. I'm not sure how old it is but it's stock. I've done nothing to the car except get a new tranny.
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Old 05-25-2011, 04:20 PM
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Re: Weird Car Noise - Any Ideas?

well i just changed my exhaust and i had a simular noise but it would only happen at 3k rpm and i found it was in my exhaust on top of the s pipe under the back seat, and when i first bought my lude it would shake and drop under 1k and i had to replace my 02 sensors and motor mounts
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Old 05-25-2011, 05:03 PM
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Re: Weird Car Noise - Any Ideas?

My dad thinks that some may just be loose. It's definitely coming from my hood though.
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Old 05-25-2011, 05:19 PM
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Re: Weird Car Noise - Any Ideas?

Vid#1 sounds like a big hole in your exhaust, or something loose inside of it.
Im not sure of that shaky thing could be that the car is purging. You can try cleaning out the throttle plate with brake cleaner while the car is on spraying is slower cause the car will back fire on your face, it has happen to me lol.
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Old 05-25-2011, 05:47 PM
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Re: Weird Car Noise - Any Ideas?

Sounds just like a hole in the exhaust start the car and let it run, while your doing pop your head under it and listen
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Old 05-25-2011, 06:20 PM
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Re: Weird Car Noise - Any Ideas?

Where's the throttle plate at? :P Sorry for knowing jack crap.
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Old 05-25-2011, 10:40 PM
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Re: Weird Car Noise - Any Ideas?

i've never herd anything called that but i'm sure it's by the throttle body right by where your throttle cables are and fuel rail
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Old 05-25-2011, 10:41 PM
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Re: Weird Car Noise - Any Ideas?

look over ur engine and look to the back, theres a cable from ur gas pedal that goes to it, youll have to remove ur intake tubing to get to it, the first video sounds like maybe your heat shield under ur exhaust is rattling? and ur 100% positive its not the tranny? automatic trannys for preludes suck!! find out what ur check engine light is, that may help you sirrr
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Old 05-25-2011, 11:16 PM
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Re: Weird Car Noise - Any Ideas?

Quote:
Originally Posted by Chrisludetec View Post
look over ur engine and look to the back, theres a cable from ur gas pedal that goes to it, youll have to remove ur intake tubing to get to it, the first video sounds like maybe your heat shield under ur exhaust is rattling?
+1

yeah, i seem to recall telling you in a different thread to check out the heat shield on the header. did you even do that? pop the hood. rev the engine and listen for rattling. the shaking could be a few things. like it was mentioned, check the CEL code. it doesn't need to be reset. that's your car saying "hey something is wrong" and you resetting it is like bitch slapping a woman and saying, "i thought i told you to stay in the kitchen" it's just not right and it should never happen. listen to her conerns.

there rarely is one solution to every problem. that's an even more true when it comes to cars. that's whey they invented CEL's. so no one is going to give you the 100% guaranteed, fool proof, that's got to be the answer, answer. you're going to have to actually lift a finger and get a little dirty to figure it out.

so go out there, lift up the hood, rev the motor and listen for noises. then go to autozone, ask to borrow their check engine light code checker and hook it up and check for yourself.. sometimes if you ask kindly enough they'll do it for you. in fact, i think they actually prefer it that way.
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Last edited by Beaker; 05-25-2011 at 11:25 PM.
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