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View Full Version : Looking for some help: Weird Noise

ArunSenior04
02-16-2007, 02:35 PM
Its not a serious problem, but I have been having this weird noise come from under the car for about a week. I think its my header (It reminds me of header noise). Its like a rattling sound. When I start my car in the morning, I can barely hear it. I did a quick look under my car, and saw nothing. Its a weird sound, I can only hear it during the low revs (before the throttle noise.) There hasnt been any cels, or performance problems, but I was wondering if anyone could help? Its really annoying.
Munky
02-16-2007, 02:58 PM
Automatic or Manual?
PSUsouthpaw
02-16-2007, 03:38 PM
Do you have any lose or unbolted brackets?

I think he has an Auto...
Doohickie
02-16-2007, 03:42 PM
If it's a rattling, check the heat shields on the exhaust.
KeWLKaT
02-16-2007, 03:57 PM
he has a header no?
PSUsouthpaw
02-16-2007, 04:08 PM
Correct, but there may be a loose bracket or hanger or something...or possibly a heatshield on the cat is getting loose and dangly...
KeWLKaT
02-16-2007, 04:16 PM
^ could be the cat heatshield that is welded on the frame under the car
Lts 05GT
02-16-2007, 04:20 PM
Sound like the same problem I had last week, (thread) (http://www.elantraxd.com/forums/showthread.php?t=21169). Sounded like a loose heat sheild, but then the dealer just replaced my whole cat, probably not necessary but I wasn't going to complain, and it fixed the problem.
Doohickie
02-16-2007, 04:43 PM
On my old Aspire, I had to climb underneath about every 6-12 months and tighten all the heat shield clamps, and replace the ones that broke. One reason I liked the Elantra over some of the competing cars is that more of the heat shields were mounted to the body instead of the exhaust. But I guess there are still some heat shields left on the exhaust mani and cat.
cobase
02-16-2007, 08:47 PM
I got that noise on my mom's old Escort after I tried to drive over some snow and got hung up. It was some kind of ring/bracket around the cat heatshield. I had a shop cut it off during a oil change. Hope it wasn't important...
Cypher
02-16-2007, 10:56 PM
don't be a punk reece. jsut crawl under it and check :tongue:
ArunSenior04
02-17-2007, 12:22 AM
lol. It prolly is a loose bracket or something. Ive had to drive over so much snow, i guess its expected.
SuperGLS
02-17-2007, 12:29 AM
I agree with Jimbo on this one. Of course, sometimes it's hard to simulate driving with your hands. What I mean is that when my sway bar was loose I could shake it with my hands and there was no noise, but when driving there was.
Doohickie
02-17-2007, 12:41 AM
If it's a vibration at certain rpms, have someone in the car, and get down NEXT to the car and poke around the exhaust with a broomstick. If you can press on certain shields or brackets and make the rattling stop, then crawl under after the car is turned off and see what's loose.

</VoiceOfExperience>
Cypher
02-17-2007, 12:04 PM
you can come over here this weekend if you want reece and we can take a look at it.
ArunSenior04
02-17-2007, 08:58 PM
Thanks for the offer. After investigating, I think its the shield on the 2nd cat. The sound is definately coming from the middle of the car. I did get under the car, but didnt have anyone to press the gas to confirm it.

Ill try to get a sound clip.

http://www.youtube.com/watch?v=eX4SXkH02s8