Question about 2002 Audi A8

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2002 audio a8, had fuel pump replaced last year. Recently Car was not starting on first attempt but would start on 2nd attempt. This then became 4 attempts to start. On the Last day the car ran my husband was driving and said it was hesitating like it wasn't getting gas. Car will not start now. Turns over but will not start. Mechanic first said it was most likely the cat conv. Then after it was on the computer said it was the fuel filter and mass air flow control sensor. He tried replacing the mass air contrIol sensor but the fuel will still not get to the engine. Is there a way to determine what the exact problem is from the computer?? If it needs cat. conv. will that fix the starting problem. Could it be several things. Isn't there a way to find out everything I need to fix the car? I' m not sure how much money I should put into it. HElp

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  • yadayada
    yadayada Jul 02, 2010

    sounds like the fuel pressure may be bleeding down due to a faultty pump check valve, the check valve is part of the pump, was this a factory OE pump?.

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  • Audi Master
  • 1,154 Answers

If u have an ELECTRONIC problem the computer can give u answers. It wont tell u if the fuel filter is ng. I advise u to get a second opinion.

Posted on Mar 13, 2017

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Engine don't start and have a clicking sound

you should check and see the batttery smart visor indicator (if applicable - see owners manual)
this may be that the battery has been drained and does not have enough power to rotate the starter. lights, dashboard, instruments light up ok as the voltage is there but the power (amperage) is low. please refer to owners manual on how to recharge your battery. bare in mind that removing the baterry from the care will reset systems (audio, alarm) and you wil need to recode them by using the codes provided with the car.

Posted on Jul 22, 2008

  • 178 Answers

SOURCE: White Smoke out my exhause,

Hello chris first thing you need to do is while the car is running go to the rear of your car have somone increase the gas pedal to get it to smoke now smell the smoke does it smell like antifreeze if it does most likely headgasket going wich means your head needs to be pulled to change the gasket if it smells like oil possible valve seals clogged oil returns this is all serviced under your valve cover if car is turbo turbo seal internal most likely ruptured and is letting oil get into the exhaust port side have your turbo checked if there is wettness around the housing areallook for exsesive oil leaking externally goodluck please rate

Posted on Oct 02, 2008

tommyboinow
  • 324 Answers

SOURCE: Audi 2001 A4 (B6)TDI SE 130BHP

you need ot do a tune up, these problems are ussually associated with bad wires and coil packs...

Posted on Nov 26, 2008

  • 49 Answers

SOURCE: after oil change car stopped driving

Is this the first time your husband has changed the oil on your car?  Wild guess here, but could he have inadvertantly drained the transmission fluid instead?  Believe it or not, it does happen.  Check the engine oil via the dipstick and see if there is way too much oil in there.  Then locate the transmission dipstick and see if there is any in there.  If not, you'll need to get some transmission fluid (very different from motor oil) and refill the transmission and then drain the engine oil and refill with fresh oil.  For the record, engine oil problems shouldn't affect the transmission.  If there is not enough oil, engine oil lights will come on and if run too long, the engine could sieze up (very bad). 

Posted on Jan 25, 2009

  • 1 Answer

SOURCE: Need help with Audi A4 2000 1.8t Misfiring and Fuel/Air Problems?

replace the speed idle sensor

Posted on Feb 28, 2009

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