2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

Phantom Noise..?

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Old 08-21-2008 | 01:40 AM
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Phantom Noise..?

Hey guys,

Ok.. So recently I've been having a noise under my hood. It's a very steady beeping noise. Every second, a beep. It's coming from my valve cover, right over my injectors. But it's only while at idle. As soon as I give it gas, it stops until it reaches idle again. It's quite a loud noise. I do have a SRI intake and a ram-air hood, but it just seems quite loud for what it is.. I wasn't sure if it could've been a belt, but it's coming from the top of the engine. Has to be something in the injectors or something? My car isn't due for inspection for another month, and I hate taking it there when there isn't a real problem. The car is running perfectly fine, aside from a tiny drop in MPG recently and coolant temps rising every once in a while as well.. It has a mind of it's own.. Any ideas? Will it hurt anything or just be annoying? lol.

Also, if it IS the injectors, are the s/c injectors a good idea? I heard they really don't help much over the 2.4 ones unless you boost? And you need a tune or something anyway? Info?

Thanks!
Old 08-21-2008 | 01:41 AM
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hey i don't know if you know, but css/net glitched or something but you have two threads up
Old 08-21-2008 | 01:44 AM
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I deleted the one in the 2.2 area.. haha Thanks.
Old 08-21-2008 | 01:45 AM
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I have no idea what's wrong with your car, but can you post a pic of the ram-air hood if it's not CF?
Old 08-21-2008 | 01:47 AM
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It is. haha
Old 08-21-2008 | 09:34 AM
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...anyone?
Old 08-21-2008 | 09:54 AM
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RKsport hood? Wish I could help ya out but I have no clue.
Old 08-21-2008 | 10:44 AM
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When you say beep...do you mean like a 'Electrical Beep' noise?


got a vid camera..or a vid camera on your phone that you can upload a vid so we can hear?
Old 08-21-2008 | 10:48 AM
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Yeah, meant to take one yesterday. I'll get it today and post it ASAP.. But yes, an electrical beep.. It's odd.. haha
Old 08-21-2008 | 10:55 AM
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Originally Posted by averagewhiteboy
Yeah, meant to take one yesterday. I'll get it today and post it ASAP.. But yes, an electrical beep.. It's odd.. haha
Were one of your friends checkin out your sweet rides motor and drop his/her cell phone in there?



There is nothing electrical that would cause a 'beep' around the injectors. Unless maybe the injectors have a new fail system that beeps to let you know its failing...but ive never heard it.

call the stealership and ask what it could be.
Old 08-21-2008 | 11:01 AM
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yea ^ thats what i was thinking but other than that i could be one of those tricky sounds that's actually coming from something else but... other then that idk
Old 08-21-2008 | 11:08 AM
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It's most definitely the top. But it stops when the car is accelerating. Lightly or heavily - doesn't matter. But it beeps when it's idling. I guess it's not too big of a deal since the car is running great.. I'll just wait it out until I take it for inspection in a month..
Old 08-22-2008 | 05:37 AM
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Video:

http://s48.photobucket.com/albums/f2...t=DSCN1109.flv

The beep is clearly heard. Although you can't quite tell from the video that it's from the top..
Old 08-22-2008 | 08:20 AM
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Your coil packs and spark plugs are on the top!!!???!?!?!?!???!?!?!?
Old 08-22-2008 | 08:56 AM
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thats crazy, sounds like a UFo or something. Never heard anything like that on mine.
Old 08-22-2008 | 10:13 AM
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hahahaha

I might as well put "Phantom Noise Member #1" in my sig. lol.
Old 08-22-2008 | 10:15 AM
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make a userbar
Old 08-22-2008 | 10:31 AM
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I don't know how to..? haha
Old 08-22-2008 | 10:46 AM
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dude that almost sounds like belts but its not thats probably just the video doin that lol
Old 08-22-2008 | 10:47 AM
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That's what I thought too.. It's just weird that it stops when you give it gas. Oh well. The shop will hopefully know what's up.. haha
Old 08-22-2008 | 10:51 AM
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Originally Posted by averagewhiteboy
I don't know how to..? haha
userbars.com

i'll try later today
Old 08-22-2008 | 10:56 AM
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Are you sure it stops when you give it gas or maybe the sound is just being drowned out by the motor noise or exhaust noise?
Old 08-22-2008 | 10:57 AM
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Nope. Even if you just crawl. Still stops.
Old 08-23-2008 | 02:07 AM
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sounds like a belt or something rubbing..maybe tightens up with gas and clears whatever its rubbing on? Sounds exactly like a rubber eraser would if you squeaked it quick on a table top.
Old 08-23-2008 | 09:58 AM
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Get the belt replaced! If it keeps making the sound after a new belt, you have a bearing going out on one of the belt driven items.


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