Enormous Rattling!!!!
#1
Member
Thread Starter
Join Date: May 2003
Location: Michigan
Posts: 266
Likes: 0
Received 0 Likes
on
0 Posts
Enormous Rattling!!!!
Alright guys....well for the past couple of months, when my car is idling from 600-1200 RPM's, the nastiest rattling noice comes from the engine bay. The only way I can describe it is like a hundred slinkies being dragged across something. Now lately, it's gotten much worse, as has my idle problem. (I'm thinking they're related) I'm idling around 500, and it almost sputters just before going back up to 700 then 500, etc. I have to keep my foot on the break and rev it at stoplights, it sux! I decided to jack up my car, and visually search for it. I couldn't see anything, but the sound seemed to be coming from the very bottom of the engine near the Cam(?)..I'm a newbie so I'm not exactly sure what the bottom pulley is, but I'm pretty sure it's the cam. It sounds like it's coming from that, and my car has lost tremendous power since this problem got worse.
Now I read that it could be the cat....? I'm not even too sure what it looks like :-/ but I'm assuming it's the pipe in which I installed my O2 sensor. I knocked on it, but couldn't really hear any rattling.
Does anyone have any idea's? Thanks a lot
Now I read that it could be the cat....? I'm not even too sure what it looks like :-/ but I'm assuming it's the pipe in which I installed my O2 sensor. I knocked on it, but couldn't really hear any rattling.
Does anyone have any idea's? Thanks a lot
#3
Member
iTrader: (1)
Join Date: Jul 2003
Posts: 225
Likes: 0
Received 0 Likes
on
0 Posts
Car: 89 GTA
Engine: L98
I had that problem, major rattling coming from the front of the car. My initial thought was one of the catalytic converter heat shields was loose. Well I had to get it inspected and have emissions done right after the rattling started, and I couldn't pass emissions. Turns out one of my cats broke inside and whatever it was, was rattling. I had just gone about 50miles on the worst possible road ever, at highway speeds. (I had no option but to go that fast, it was a highway... that's PA for you) And right after that trip the rattling began.
#4
Senior Member
iTrader: (1)
Join Date: Sep 2003
Location: St. Louis, Missouri
Posts: 988
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Firebird Formula
Engine: 383 Stealth Ram
Transmission: 700R4
Axle/Gears: 3.73 9 bolt Posi
Sounds like it could be the cats.
Mine made a terrible noise (especially at idle) and sometimes caused the car to idle badly.
FYI... the cam shaft is in the middle of the motor. The crank shaft
is located at the very bottom of the motor.
Good luck!
Mine made a terrible noise (especially at idle) and sometimes caused the car to idle badly.
FYI... the cam shaft is in the middle of the motor. The crank shaft
is located at the very bottom of the motor.
Good luck!
#6
Supreme Member
Join Date: Jun 2001
Location: Charleston, SC
Posts: 9,550
Likes: 0
Received 2 Likes
on
2 Posts
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
change your oil in a clean pan and look at it... see if there are any metal shavings... dip your finger along the bottom of the pan after it drains and see if you feel any "grit"
hopefully you wont find anything, but if its coming from the bottom half of inside the motor, thats not a good thing....
before or after you change the oil, get a short piece of hose, put it to your ear and then put the hose on various places of the engine with it running... (watch out for hot and spinning parts )
that should help you pin point where the noise is coming from...
hopefully you wont find anything, but if its coming from the bottom half of inside the motor, thats not a good thing....
before or after you change the oil, get a short piece of hose, put it to your ear and then put the hose on various places of the engine with it running... (watch out for hot and spinning parts )
that should help you pin point where the noise is coming from...
Thread
Thread Starter
Forum
Replies
Last Post