Rattling sound at high RPM, can't figure it out.

astronut1885

Founding Member

Jan 31, 2002

1,899

4

39

Assonet, MA

Jan 11, 2004

#1

• Jan 11, 2004

• #1

Hey guys. I was out blasting in the stang tonight, pushing it to red line on several back roads, and every time I passed around 4500-5000 RPM, I could hear this rattling sound. I thought it was coming from my shifter, which is stock, then I thought it was my steering column. Anyway, it only happens at WOT in high rpms, and I can't find it. It sounds like a hollow ball being wacked against metal I guess. It's pretty loud and damned annoying when I am jamming along. Any help you can offer is great. Mods and timing in sig. I run 89 octane pump gas. Thanks!

 

1

1BAD89GT

New Member

Jan 2, 2004

87

0

0

Oklahoma

Jan 12, 2004

#2

• Jan 12, 2004

• #2

astronut1885 said:

Hey guys. I was out blasting in the stang tonight, pushing it to red line on several back roads, and every time I passed around 4500-5000 RPM, I could hear this rattling sound. I thought it was coming from my shifter, which is stock, then I thought it was my steering column. Anyway, it only happens at WOT in high rpms, and I can't find it. It sounds like a hollow ball being wacked against metal I guess. It's pretty loud and damned annoying when I am jamming along. Any help you can offer is great. Mods and timing in sig. I run 89 octane pump gas. Thanks!

Click to expand...

Maybe exhaust rattling against the bottom of your car?? my buddys used to do that drove me nuts everytime i rode in it,I finally adjusted his exhaust for him one day when he stopped by before we went cruisin.And that cured it.

 

astronut1885

Founding Member

Jan 31, 2002

1,899

4

39

Assonet, MA

Jan 12, 2004

#3

• Jan 12, 2004

• #3

Don't think so, my pro chamber hangs just right and has the metal rods that keep it in place under the tranny mount.

 

onefaststang

Kingpin

Founding Member

Jan 1, 1999

9,049

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79

Elmira NY

Jan 12, 2004

#4

• Jan 12, 2004

• #4

detonation.

 

Icepick

Founding Member

Jul 30, 2002

378

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0

Ft Lauderdale

Jan 12, 2004

#5

• Jan 12, 2004

• #5

i would think it is coming from somewhere in the engine. You typically get non-engine vibrations around 2500rpm (the drone zone) because thats when the exhaust causes the most vibration in the car. Maybe its even the engine mounts or tranny or driveshaft?

 

B

bt15

Member

Sep 3, 2003

129

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17

Oahu

Jan 12, 2004

#6

• Jan 12, 2004

• #6

Clanging

Broken up bits of catalytic converters clanging around in the pipes, catalytic converter heat shields that have come loose are prime suspects. Also, O2 sensors that are loose or have disintegrated in the pipes are possibilities. Some less common sources include contact between headers and/or smog tubes and other components. Do you sense a "buzz" or vibe in the car concurrent with these noises? Have you any idea the general area the noise is coming from? If so, maybe we can help narrow it down a bit. Good luck!

 

astronut1885

Founding Member

Jan 31, 2002

1,899

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Assonet, MA

Jan 12, 2004

#7

• Jan 12, 2004

• #7

I have an offroad H pipe, there's no cats. I don't think I am having detonation, becuase I can feel a vibration in the shifter when it happens. When I have the car in neutral, I can jiggle my shifter and get a tapping sound from it's base, and the sound is just like that only in rapid succession. I think it's about time for an aftermarket shifter...

 

Icepick

Founding Member

Jul 30, 2002

378

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0

Ft Lauderdale

Jan 12, 2004

#8

• Jan 12, 2004

• #8

Maybe even a bad u joint. If it turns out that way get an aluminum d/s, $150-175 brand new and it includes both front and rear u joints, but since you feel a problem while still at idle i doubt it's that, but you mentioned it was bad at 5500rpms so who knows.

 

astronut1885

Founding Member

Jan 31, 2002

1,899

4

39

Assonet, MA

Jan 12, 2004

#9

• Jan 12, 2004

• #9

I want an aluminum drive shaft, but like I said, my shifter feels loose and I can jiggle the stick in it's mount and it sounds the same as the rattling, only slower. I think it is a work out old shifter.

 

Icepick

Founding Member

Jul 30, 2002

378

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0

Ft Lauderdale

Jan 13, 2004

#10

• Jan 13, 2004

• #10

I love my Steeda Tri-ax, major improvement over the sloppy stocker.

 

astronut1885

Founding Member

Jan 31, 2002

1,899

4

39

Assonet, MA

Jan 13, 2004

#11

• Jan 13, 2004

• #11

Went driving hard again, it's definitely the shifter, no doubt about it. I think I am gonna get either a pro 5.0 or a tri ax.

 

R

RiceBurner13

New Member

Nov 25, 2003

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0

Jan 13, 2004

#12

• Jan 13, 2004

• #12

my heat shield rattles when i floor it after about 4 grand, thats a common prlbme my friends have, but if its your shifter thats straight. I reccomend the hurst shifter as well, i drove a pro-5.0 and thought the hurst was harder to shift but quicker for some reaosn. good luck.