Weird Sound

[04YELLOWGT]

Hey guys, I just got my car back a few days ago and under a light load when taking off from a dead stop I hear a metallic rattling noise. I some times here it shifting into second but I don’t always hear it when taking off either. I had a problem with this before when one of my 02 sensors was loose but I checked them and they are both tight.

Has anybody else ever had this problem or have any idea what you think it could be?

I don’t think its detonation either.

 

[the98stang]

Hey guys, I just got my car back a few days ago and under a light load when taking off from a dead stop I hear a metallic rattling noise. I some times here it shifting into second but I don’t always hear it when taking off either. I had a problem with this before when one of my 02 sensors was loose but I checked them and they are both tight.

Has anybody else ever had this problem or have any idea what you think it could be?

I don’t think its detonation either.

Have a friend rev the engine while you hunt for the noise. Could the cats, any shield, tons of stuff.

 

[04YELLOWGT]

No Cats. I tried revving the car but you cant hear it, the car has to be moving.

 

[Mizark347]

Does it sound like BB's in a tin can? Have your U-joints checked.

 

[R.J.]

I had a noise like this when I took off, turned right and/or hit bumps at high speeds. I checked all of my suspension many time over 6 months. I check exhaust, body panels, door panels ect. It ended up being a EVAP systen 1/2in hard line (solid metal yube) that runs the length of the car in the driveshaft tunnel. It had unclipped from its plastic clip and would swing down low enough, at the above mentioned times, to hit my pinion flange.

 

[04YELLOWGT]

I'll have to look into that, IMm going to get it on a lift tomorrow and see if I can figure out whats going on.

 

[03redgtstang]

metallic rattling? does it sound very high pitched like a ringing?. Where does the sound seem to be coming from. When driving, pull down your rear seats. If the rattle is much louder it is coming from the trunk compartment. I had the same problem and its baffled me forever.im fairly sure it has somethin to do with my mach audio but i just havent had the time recently to see exactly where its coming from, but after pulling down the rear seats its obvious its something in my trunk. Could be mechanically related in your case, but not all noises are so as in my case. Just a thought.

 

[2002BLGT]

you just got the car back from where ?
what kind of work did you have done on it ?

 

[BennyBlown2v]

Driveshaft will make a knocking sound when it shifts around. Also check wheel bearings.

 

[04YELLOWGT]

you just got the car back from where ?
what kind of work did you have done on it ?

I was in a wreck and just got the car back from being fixed.

 

[2002BLGT]

I was in a wreck and just got the car back from being fixed.

what was hit in the wreck , I would say its probably related to something to do with that if you were not having the noise before hand

 

[04YELLOWGT]

The drivers side front. I was hit by a Semi or I guess I should say I hit a Semi. He ended up just nicking me.