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Old 02-23-2010, 12:54 PM   #1 (permalink)
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Unhappy Audi A6 fuel pump issue

Hi all,

Friday I was driving to work in my car( 2000 A6 quattro 2.7L) and it was low on fuel. I was getting late and the miles remaining indicator showed 5 miles, so I thought I ll get it filled on my way back home. In the evening i tried to start it and it would'nt start. Battery was good. The starter motor was cranking. So I got some fuel and filled it( about 2 gallons). Still it would'nt start. I thought jump start may work. Still would'nt start. At the end I had to call my insurance company to get it towed.

I took it to a Sears Auto place, I left the car over night and in the morning i get a call saying that they were not able to find the problem . When I went in they said they were not able to fix it, I should take it to an Audi dealer. They also said it might be the starter motor. . I said I heard the motor cranking then how is it the starter? They said its what the mechanic said.

So I called my insurance company again and got it towed to a sunoco service center. That guy checked the car figured its not the starter motor, but said it the fuel pump. He also added that when he smacked the fuel tank with a hammer, the car started. So i went to the car and tried starting it, and it started without a problem. The mechanic said the fuel pump must be replaced, and its a 1000$ job( 500 part + 500 labor)!!!!!.

I feel that dirt in the fuel tank caused the problem since i tried starting it when it was very low on fuel, but now on a full tank its starting and running fine. I drove the car back home( 5 miles from the service center) and didnt feel any problem. I parked the car at home worried if it may stop again.

So now i would like you guys to help me in figuring out if I am right or the mechanic is right? If the problem is with the fuel pump how is it still running?
If its really a fuel pump issue how much would it cost me. I saw the part online it was 230$ , so how much would the labor cost?


Thanks in advance

Sunil
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Old 04-21-2010, 06:37 AM   #2 (permalink)
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That sounds about right. If the fuel pump isn't working right, then it won't crank enough gas for engine in circulation to use.

We just bought an 04 Audi A6 avant with 125K on it and the previous owner replaced the fuel pump at 87K miles for $1100. That was at a dealership so it was pricey

A CERTIFIED shop should get the job done for closer to $400-500.

We just took our Audi for a new Timing belt, water pump, and tensioner and the shop charged us $900+ tax.....

So the job should be done for around $500. Don't bother doing anything yourself
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Old 09-05-2010, 04:52 PM   #3 (permalink)
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from what i can see the pump is just under the rear seat, if you pull up on the front edge of the rear seat it will pop out of fixing clip. under there is a plate at each side with 3 screws in each. the pump is under there on one side, on my 2.5tdi it is under the one at the right hand side as if sitting in the car looking out the front reason i say this cos some people dealing with left hand drive cars so am not sure if they are different.
anyway, once in there it is a simple job of clamping the fuel hose lightly to stop fuel escaping and to ease bleeding the system remove hose clamp, remove electrical connections. then tap around the clamping collar and swapping the whole unit. should not take long.just be careful with normal fuel related safety, ie, no naked flames or hot work lamps etc.
refit in reverse, new hose clip and check for leaks etc....

some basic mechanical experience may help but should not be that expensive.
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Old 09-05-2010, 08:11 PM   #4 (permalink)
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Agreed with ajm - 3 hrs job with the manual. It costed me $190 for bosch pump on C4.

Manual really helped to figure out how to turn the pump in the tank to take it out.

Running on low gas is bad for the pump. Can you hear bzzzz when you turn on the ignition (do not start - just turn and listen).
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Old 10-15-2010, 02:31 PM   #5 (permalink)
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Yea its real easy DIY job, lift the bottom part of rear seat and open the right side cover, 3 screws, open hoses, then kick the retaining ring open (counterclockwise i think it was) and replace the pump.
The REAL problem with those is that the part catalogues offer only the pump WITH the plastic sh*t around it, so i went to a shop and bought some bmw pump for 3 times cheaper price
Works!
The pump which got fitted was: Meat and Doria | Automotive Special Parts

Oh, mine died just like that - wife came to pick me up @ work, turned car off, and no more starting...
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