Through the last few weeks the car would not start on the first attempt. With the second attempt and a few seconds of chugging, the car finally starts. Now the car still chuggs full power but doesnt start. The fuel pump fuse is okay. I don't know where the fuel pump relay is located and how to check it out. Is it a coincidence or maybe something was on its way out, like the fuel pump or something else? Does it matter that I am now using the car in a location with a cold climate/ high altitude? Thank you in advance.

 

What year, engine and transmission?

 

Do you know if the fuel filter has ever been replaced? Commonly overlooked as part of the maintenance, a clogged fuel filter will strain the fuel pump and eventually wear it out.

 

very true this happen to me just 2 weeks ago

 

Thank you for your respond. 1999,

 

How did you solve the problem

 

well it was the fuel pump so I ended up swaping it out

http://www.audidiy.com/c5a6.html
Audi C5 A6 (Do It Yourself)

 

Did you replace it by your self or mecanic,is it expensiv? Mean labor.
Happy holidays and thank you

 

I am guessing that if you live in the states that the engine then must be the 2.8. Am I right or do you have a different engine? Has the fuel filter ever been replaced? Have you checked the power of the battery? Has the ignition ever been repalced?

 

battery is ok, You are right car is 2.8 quatro avant. Is it posible that is just fuel filter , car is chugging but doesn't wont to start.