280ZX (S130) Forums Dedicated to 79-83 ZCars

weird sound in the back

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Old 10-16-2012 | 06:52 AM
  #1  
Bowaled's Avatar
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weird sound in the back

hey folks ,

got 2 question

1-there is a sound i the back and they told me that i got a bad fuel pump and i replace it , and i still hear that annoying sound (humming noise )

2- the a/c isn't working i check it with a mechanic and he told me that is the compressor is fine and it need to recharge and cleaning , the thing is when i turn the fan on not working , i thought might be a fuse or something like that
Old 10-16-2012 | 08:33 AM
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MurphyEF's Avatar
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From: Lacey, WA
Doesn't ne essarially mean the fuel pump is bad. Mine is brand new and I can hear it inside the cab, its just noisy for me. Check it out to see if it looks newer, then try remounting it with better rubber isolation and seeing if that helps.

When you turn on the fan, does the fan not kick on? Or does it just blow warm air? If the fan doesn't kick on, the common problem that I have seen (locally) Is the fan being unplugged (just near the glove box, on mine it is a dual connector in the shape of a "T"). If it just blows warm air, it does indeed sound like it needs to be recharged and possibly cleaned.
Old 10-16-2012 | 09:39 AM
  #3  
Bowaled's Avatar
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thanks for ur respond

the fan not kick and what do u mean by the glove box ? and where is it locate

Last edited by Bowaled; 10-16-2012 at 09:42 AM.
Old 10-16-2012 | 10:23 AM
  #4  
NismoPick's Avatar
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From: Wild Wild West, UTAH!
The 280zx has an external fuel pump... so it's always going to be audible.

Download the FSM for free from XenonS130 - S130 Reference and you'll be able to see what Murphy is talking about.
Old 10-16-2012 | 06:13 PM
  #5  
Bowaled's Avatar
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thanks NismoPick,

yeah i change it my self :P , but i didnt know that this is cuese it external
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