Transmissions and Drivetrain Need help with your trans? Problems with your axle?

bubbling noise?

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Old Sep 9, 2009 | 09:43 PM
  #1  
osirus's Avatar
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From: Corning, CA
Car: 89' RS
Engine: 350 TBI
Transmission: 700r4
Axle/Gears: 2.73 posi
bubbling noise?

Okay, so I've been hearing this sound from somewhere behind me while driving. I'm not too sure how to go about figuring this out as I've never really worked with that end of the car. When I start driving, it's pretty immediate. It sounds kind of like bubbling water. I don't know how else to explain it. If there's any more details that I can provide, just let me know. I'm just curious if I should be worried about dying or something on the way to work. thanks,

Eddie.
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Old Sep 10, 2009 | 11:05 PM
  #2  
osirus's Avatar
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From: Corning, CA
Car: 89' RS
Engine: 350 TBI
Transmission: 700r4
Axle/Gears: 2.73 posi
Re: bubbling noise?

Any idea that I could check out would be nice. I really don't know where to start with this one.
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Old Sep 11, 2009 | 06:58 AM
  #3  
big gear head's Avatar
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Re: bubbling noise?

Probably the return fuel line in the gas tank.
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Old Sep 11, 2009 | 06:05 PM
  #4  
osirus's Avatar
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From: Corning, CA
Car: 89' RS
Engine: 350 TBI
Transmission: 700r4
Axle/Gears: 2.73 posi
Re: bubbling noise?

Would that only really present itself during any kind of throttle?
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Old Sep 11, 2009 | 06:17 PM
  #5  
3rd gen Will's Avatar
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From: Peoria, AZ
Car: 91 Z28, 2000 T/A
Engine: SBC 355, LS1
Transmission: T56, T56
Axle/Gears: 10bolt 3.73, 3.42
Re: bubbling noise?

Originally Posted by osirus
Would that only really present itself during any kind of throttle?
If it is the return line it would be more noticable at low load condition, IE cruise/idle because more fuel is getting sent back to the tank.
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Old Sep 11, 2009 | 06:24 PM
  #6  
osirus's Avatar
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Joined: Aug 2006
Posts: 279
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From: Corning, CA
Car: 89' RS
Engine: 350 TBI
Transmission: 700r4
Axle/Gears: 2.73 posi
Re: bubbling noise?

I can hear it when I'm barreling down the high way ha ha. I don't hear anything at idle though. I wish I could describe the sound better. kinda like water in a creek going down the mountain haha! I really have no clue how to explain it. How can I find out for sure if it's the fuel return line?
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Old Sep 11, 2009 | 06:45 PM
  #7  
3rd gen Will's Avatar
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From: Peoria, AZ
Car: 91 Z28, 2000 T/A
Engine: SBC 355, LS1
Transmission: T56, T56
Axle/Gears: 10bolt 3.73, 3.42
Re: bubbling noise?

Originally Posted by osirus
I can hear it when I'm barreling down the high way ha ha. I don't hear anything at idle though. I wish I could describe the sound better. kinda like water in a creek going down the mountain haha! I really have no clue how to explain it. How can I find out for sure if it's the fuel return line?
Sure it's coming from the back? You might be pushing fluid out of your radiator into the overflow reservior. I'd pressure test or replace your radiator cap.
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Old Sep 11, 2009 | 06:52 PM
  #8  
osirus's Avatar
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From: Corning, CA
Car: 89' RS
Engine: 350 TBI
Transmission: 700r4
Axle/Gears: 2.73 posi
Re: bubbling noise?

i'm positive it's coming from behind me.
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