rattling noise under 1k rpms

not sure...

not sure about 1 grand rpms...but below 2.5 i get something along the sort...im pretty sure its just the exhaust gases vibrating the pipe..i get it occasionaly ...more often when i accelerate slow((but hey how often is that ) so just floor it and your problem will cease to exist . jk...give it some time and see how it goes...it coudl be that...but for me it wasnt the passenger side. hope this helps...play around with the gas a bit and see.
Bob

my 5-speed has a rattling too... if you find out what it is, please tell us... i'd like to know... for some reason i think it's my tranny (which has been bad ever since i bought the car)... or maybe the cat? i don't know but if you find out then please tell us

it is more like a creek rattle, but its only at idle, if i press the gas even a little and bring it >1krpms its fine. anyone?

I had a rattle at idle, actually only when it was coming to an idle - like when I pulled up to a stop sign. Turned out that the bracket that holes the front of the cat pipe was broken and I would get a metal on metal vibration there. Sounded like a propeller beating against a metal pot.

hey thanks alot ill check that out

mine made a noise like that, turned out the exhaust bracket was cracked, so I had the shop weld it back together doesn't rattle anymore

I had the same rattle caused by a crack in the front exhaust bracket. I replaced the bracket and the rattle was gone. This bracket seems to develop a crack at around 70 - 80 K miles.

Re: Try This Lateralus

sparkboy said:

Took me 6 months to figure this one out!
Get the car nice and hot. Try moving the Tension Pulley just below the Cam Gears back and forth. There is a spring and some kind of bushing or bearing in there that is creeking on my car. Not sure yet if it is lube-able or not. When I get time i'll pop it off. Let me know if you have the same problem and if you were able to fix it.

Click to expand...

i checked under the hood and im not sure i saw what you are talking about do you have any pics? i did notice something funny though-their are 4 wheel/pulley thingies)) next to that front fan and the bottom right one sometimes doesnt turn yet the belt still moves around it? then sometimes it turns on and i can hear the rpm's rise a little. is this normal? i dont know alot about engines (as u can see) but this seems strange to me.

I believe you are lookin at the a/c compressor that's comin on and off. When the a/c kicks on the rpms should rise (that is normal). Try turnin the a/c off, then re-check. But i believe the rattling problem is, as other's have pointed out, that the exhaust bracket is broken.