wierd sound from back of motor????

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redfox91

Member

May 24, 2004

94

0

6

Northwest Arkansas

Nov 14, 2006

#1

• Nov 14, 2006

• #1

I have a 91 GT that is all stock and has a noise coming from the back of the motor... It doesn't quite sound like a knock and there is no loss of power or loss of oil pressure. It doesnt get hot. It is just a loud noise that stays pretty much the same when you rev it up. It has an AOD transmission. Any help would be great?????

 

Nicoleb3x3

Member

Jun 9, 2004

274

0

16

southern NH

Nov 19, 2006

#2

• Nov 19, 2006

• #2

does it sound like perhaps an exhaust leak? what about the smog rails that go along to the back of the heads? If they're leaking it can sound ****ty.

 

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bentley429

Banned

Nov 25, 2004

528

3

0

Connecticut

Nov 19, 2006

#3

• Nov 19, 2006

• #3

What exactly does it sound like? A rattle or more of a knock?

 

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redfox91

Member

May 24, 2004

94

0

6

Northwest Arkansas

Nov 19, 2006

#4

• Nov 19, 2006

• #4

it sounds different than a regular knock. It has a slight knock but also a screach as well...??? Its not an exhaust leak I am sure of that. It sounds broken but that does not affect the performance...

 

myslo50

Member

Jun 12, 2006

247

3

18

ohio

Nov 19, 2006

#5

• Nov 19, 2006

• #5

sounds like the motor is shot...the screaching noise is probably the rod rubbing aginst the crank. could also be a cracked flex plate but i dont think that would make the car loose power and def. no loss of oil pressure.....just something to think about?

 

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bentley429

Banned

Nov 25, 2004

528

3

0

Connecticut

Nov 20, 2006

#6

• Nov 20, 2006

• #6

myslo50 said:

sounds like the motor is shot...the screaching noise is probably the rod rubbing aginst the crank. could also be a cracked flex plate but i dont think that would make the car loose power and def. no loss of oil pressure.....just something to think about?

Click to expand...

If a rod is knocking your gonna know it, and he said there is no loss of power or oil pressure. I was automaticly thinking the throw-out bearing, then I read it was a AOD....Have you takin a long screwdriver and put it up to different things around where the sound is coming from?

 

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fastranger347

New Member

Nov 4, 2006

59

1

0

york PA.

Nov 20, 2006

#7

• Nov 20, 2006

• #7

check your converter bolts, they might be loose, may be your flexpalte bolts are loose also?