Wierd noise on acceleration.. (Now with video)

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FinalSomnia
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Wierd noise on acceleration.. (Now with video)

Post by FinalSomnia » Thu Mar 29, 2007 10:58 pm

Occasionally, when driving around town, during acceleration my '00 ES makes a noise from the engine compartment that sounds like a chain rattling. It's only during acceleration, never during steady driving, and I haven't noticed it during deceleration yet.

Anyone know what the problem might be? I haven't seen another topic that addresses this specific problem, but maybe I didn't look for the right keywords or whatever.

Anyhoo, any help would be greatly appreciated!
Last edited by FinalSomnia on Tue Apr 24, 2007 2:14 pm, edited 1 time in total.
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Post by Cabbs » Fri Mar 30, 2007 12:26 am

Does it do it at low RMP's and at WOT? Because mine does that and I've been wondering what it was, just never remembered to search for it or post a topic lol.

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Post by BlackRoseRacing » Fri Mar 30, 2007 5:26 am

Do you have an UDP installed?
Any mods to the engine?
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FinalSomnia
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Post by FinalSomnia » Fri Mar 30, 2007 9:43 am

In town I don't tend to WOT, unless I'm at a redlight and the granny next to me had got on my nerves :P But anyways, it's under what I would call medium acceleration.

At the moment, I have no mods other than the muffler.
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Post by Cbussilver01es » Fri Mar 30, 2007 12:15 pm

FinalSomnia wrote:In town I don't tend to WOT, unless I'm at a redlight and the granny next to me had got on my nerves :P
Shame on you for racing old ladies.... anyways is it just a noise that youre hearing or are you having any other performance problems as well.
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Post by FinalSomnia » Fri Mar 30, 2007 12:21 pm

It's not affecting performance, it just worries me to hear a noise like that.
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Post by kc2005ptgt » Fri Mar 30, 2007 3:49 pm

you know, without actually hearing it I can not say, BUT it sounds like the drive train noise our cars are famous for.
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Post by Cabbs » Sun Apr 01, 2007 2:26 am

Dodge didn't really pick the best sounding motor in the world to put in our cars. That's one thing I found out after buying my car.

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Post by srtjesse » Fri Apr 06, 2007 2:43 pm

ok so now i know im not alone on this one now brace your selves so if your car has the following symptoms it wont be fun or funny the noise isnt present at idling or at sertain speeds its present at low to mid range rpms and when your foot is slightly on the gas pgeddal and sounds like mettal clinging together or chains clingin if so your rod bearrings are what we like to say fucked up my car is doing this right now its still driveable but dont get on it keep cheking your oil fluids and when driving it drive at a speed where it wont make the noise hope this helped if you guys have any questions pm me ill be more than glad to help
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Post by heyitsstock » Fri Apr 06, 2007 8:16 pm

trans problem... maybe not a problem but i bet on its coming from the trans....


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Post by OB » Sat Apr 07, 2007 12:33 am

do you shift pretty early? the tranny will make some strange noises if you shift unusually early, especially if you give it a decent amount of throttle. the sounds are normal, but its hard on the engine and tranny to bog like that, so simply adjusting your shift point closer to 3k rpm and easing onto the throttle when shifting early will fix this issue. Otherwise, it could be a clutch/tranny problem of a different sort.
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Post by srtjesse » Sat Apr 07, 2007 10:15 pm

no its not the tranny well atleast not on mine on mine its clearly the rod bearrings
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Post by fixitmattman » Sat Apr 07, 2007 10:27 pm

Inspect the heat shields for rattling. They rust through/deteriorate and rattle.
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Post by FinalSomnia » Tue Apr 24, 2007 2:14 pm

Ok, here's a quick video I did. You have to listen carefully - around the 25 second mark you'll hear a sound like a chain rattling.

http://s161.photobucket.com/albums/t221 ... CF0058.flv
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Post by kc2005ptgt » Tue Apr 24, 2007 2:49 pm

It is REALLY hard to tell, but yeah, I hear something very slightly, but have no idea what it may be. SOrry bro.
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Post by rannox » Tue Apr 24, 2007 2:52 pm

if im hearing it correctly, it doesnt sound to bad.

But just incase, i would check for loose bolts.
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Post by blazing03R/T » Wed Apr 25, 2007 11:14 am

i have a 2000 dodge neon and mine does the exact same thing yours is doing. i havent found out what it is but it doesnt to it when you push it only does it when you barly push on it
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Post by ReUp » Thu May 03, 2007 12:00 pm

I have a 2000 LX auto-trans that does this too. Took to the dealer this week but they couldn't figure it out. In the meantime I try to avoid prolonged acceleration at the problematic rpm range. Will check the heat shield next.

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Post by Es2k » Thu May 03, 2007 3:37 pm

you said you had your exhaust modified, did you get a cat back? Did who ever installed it use the U clamps? If so maybe the clamp is backing off and vibrating. And i didnt hear any chain like noise around the 25second mark in your vid. maybe i just need to listen on another computer. GL with the problem tho.

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Post by Craz1000 » Thu May 03, 2007 8:42 pm

sounds more like a powertrain problem than an engine problem, are you 100% sure its coming from the engine compartment and not from a wheel, like your bearings for example, also when was your tranny fluid changed too, on my auto i changed it at 35k and it almost needed a change but not quite yet, but i did it anyway, you can tell by the color of your fluid, if its brown.. its time for a change... the fluid has to be red

also turn you key on and off 3 times to get a list of error codes that might help too
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Post by FinalSomnia » Sat May 05, 2007 9:47 am

It's throwing no codes, dude. It's not the wheels, I assure you.

As for the transmission fluid, thanks for the help but I'm no noob ;)
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Post by blazing03R/T » Sat May 05, 2007 11:24 am

check you alternator bolt i found i was missing a nut and when i tighten it back up it stop but now i here it again but i didnt have a nut to put on it so i am getting one this weekend and will let you know if that comlpletly fixes it
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Post by gilly02le » Sat May 05, 2007 11:43 am

what the smeg, thats a pretty nasty sound at the start.. sounds like a piece of steeling falling over beside the car.. i cant hear anything out of the ordinary at 25 seconds..
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Post by jonnymopar » Sat May 05, 2007 1:25 pm

OB wrote:do you shift pretty early? the tranny will make some strange noises if you shift unusually early, especially if you give it a decent amount of throttle. the sounds are normal, but its hard on the engine and tranny to bog like that, so simply adjusting your shift point closer to 3k rpm and easing onto the throttle when shifting early will fix this issue. Otherwise, it could be a clutch/tranny problem of a different sort.
This is the same scenario with my car. If you shift and your down around 2000rpm and you give it somewhere around half throttle, you get that ssssshhhhhh noise, then it fades away by the time you get up to about 2800rpm. When I first bought it, I wasn't sure if it was the transmission. I got my transmission replace with a brand new unit at 34k and the noise is exactly the same. 71k miles now, noise is still there. With the way I've driven it in that period of time, I'm really not concerned much anymore :D .
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Post by Craz1000 » Sun May 06, 2007 12:40 am

just throwing ideas out man. my g\f vee-dub was making a sound like that and it was her bearings............ wait now that i think about it we also changed out her water pump and her pulley arround the same time........ the gears were a little loose but i doubt thats it but its a thaught
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Post by FinalSomnia » Sun May 06, 2007 10:01 am

Well I can't shift early, it's an automatic :D

Even so... it seems to do it in every gear as long as it's not either wide open or scared granny throttle.

As for the sound at the start, it's actually a bag of stuff I bought at KMart not 5 minutes previous, falling over because I made a right turn.
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Post by blazing03R/T » Mon May 07, 2007 9:53 am

I think it is your heat shield right behind on the exhaust be i look at mine this weekend and in was just sitting on there with two bolts in top only none in bottom but am not going to worry i change my oil and everything look good and trans loooks good so i think go with your gut and do what it tells you.
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