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fuel filter noise confusion

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  #1  
Old 10-15-2007, 10:16 PM
shelbyturbo's Avatar
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Default fuel filter noise confusion

i took an 8 hour trip (each way) this weekend. toward the end of each leg the car started making a very strange noise. when i got out of the car i found the noise and it is comming from the fuel filter...when i did the "fuel filter noise" search i became just slightly confused. is it a failing fuel pump causing the noiseor a clogged fuel filter? i drove it around today about another 100 miles and noticed the noise a littleearly on in the trip. i stopped and put about a half tank in and didn't notice it again however before i filled up it hadn't been making th noise either. if it starts making the noise again when i get low on gas again will that help me diagnose the real issue?

fyi - when i originally found the noise it seemed to be that the filter was vibrating so badly that it was buzzing and the noise i was hearing was the "buzzing"

 
  #2  
Old 10-15-2007, 10:18 PM
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Default RE: fuel filter noise confusion

The fuel filter gets clogged and makes the fuel pump strain and make a crazy noise. If you don't change the fuel filter soon, you're gonna be buying a fuel pump as well.
 
  #3  
Old 10-15-2007, 10:19 PM
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Default RE: fuel filter noise confusion

do u se any performance loses? if not, it's prolyl sumthing else. but top to be safe, run sum seafoam through the tank.
 
  #4  
Old 10-15-2007, 10:25 PM
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Default RE: fuel filter noise confusion

ORIGINAL: shelbyturbo

i took an 8 hour trip (each way) this weekend. toward the end of each leg the car started making a very strange noise. when i got out of the car i found the noise and it is comming from the fuel filter...when i did the "fuel filter noise" search i became just slightly confused. is it a failing fuel pump causing the noiseor a clogged fuel filter? i drove it around today about another 100 miles and noticed the noise a littleearly on in the trip. i stopped and put about a half tank in and didn't notice it again however before i filled up it hadn't been making th noise either. if it starts making the noise again when i get low on gas again will that help me diagnose the real issue?

fyi - when i originally found the noise it seemed to be that the filter was vibrating so badly that it was buzzing and the noise i was hearing was the "buzzing"

Could you explain the noise? Would it be coming from the passenger rear of the car? I have this buzzing noise that has been annoying for some time. I've been putting it off thinking it's just a wheel bearing or my rear differential; god i hope it's not my fuel filter!![]
 
  #5  
Old 10-15-2007, 10:36 PM
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Default RE: fuel filter noise confusion

good news...I am picking up the filter tomorrow and i will change tomorrow night after school. it shouldn't take long huh?

sea foam in the gas tank!? i thought that was for the oil issue? i just had the oil changed at Audi on friday...i got the all clear from them on the oil sludge. but no i dont really notice much performance drop...maybe a slight blip everyone once in a while but it seems to be low in the RPM range i just figured it was ******* cause the low RPMs

i would describe the noise as a buzzing or a whirring i think people have used before. when its happening its not speed dependant though if i push the pedal it will get a little louder but it certainly isn't consistent.

god i hope it's not my fuel filter!![]
Im pretty sure i would rather replace a $30 fuel filter than a wheel bearing or a differential!!!!
 
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Old 10-15-2007, 10:36 PM
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Default RE: fuel filter noise confusion

btw, thanks for the quick responses!!!
 
  #7  
Old 11-02-2007, 11:24 AM
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Default RE: fuel filter noise confusion

hi do any of you a4 pro know about a noise that is humming or (high) pitch cominng from either my rear car,fuel pump, or fuel filter? I just replace my fuel filter about a month ago??? It wines with the engine at very low rpm; 800-1000rpm?? and goes away and comes back on and on..... anoying noise. Please HELP ME! any suggestion will be greatfully respected!!! EMAIL: yaj_jauni@hotmail.com.
 
  #8  
Old 11-02-2007, 12:59 PM
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Default RE: fuel filter noise confusion

ORIGINAL: a4riderz

hi do any of you a4 pro know about a noise that is humming or (high) pitch cominng from either my rear car,fuel pump, or fuel filter? I just replace my fuel filter about a month ago??? It wines with the engine at very low rpm; 800-1000rpm?? and goes away and comes back on and on..... anoying noise. Please HELP ME! any suggestion will be greatfully respected!!! EMAIL: yaj_jauni@hotmail.com.
You need a new fuel pump, and start your own post next time.
 
  #9  
Old 11-02-2007, 01:07 PM
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Default RE: fuel filter noise confusion

^ totally agree but an answer is required now and its a new filter ( fuel pump is in tank ) so the noise would be greater and to the rear of the car, fuel filter could be starvation of fuel due to bad fuel filter then again it could be a flat tyre
 
  #10  
Old 11-02-2007, 02:17 PM
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Default RE: fuel filter noise confusion

The fuel filter doesn't make any noise. Its the fuel pump. The filter is after the fuel pump (b5), a clogged filter will mess up the pump. But a bad pump isn't necessarily caused by a clogged filter. OT but I think the system is a terrible design to begin with. The pump shouldn't be before the filter and definitely shouldn't be in the tank.
 


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