Question about 2000 Audi A6

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Car cranks but won'ts start

About a month ago, the car began making this noise that sounded like a siren. 20 mins aftr sounds began it stopped and a cloud of white smoke came from the rear of the vehicle. Mechanic stated the the turbos ahd gone bad and needed to be replaced. They have since been replaced, but the car will not start. It cranks, but won't strat. he has adjustd the timing, but can not find anything wrong with the vehice. Mechanic now thinks tha tthe engine control unit is bad, but wants to continue to trying to figure out what's wrong. he is alleging that the the car in backfiring into itself because the computer is sending a bad sigmal. Long sotry short, I have been without my car for over a month. He doesn't seem to know what's wrong and has not given me an anticipated completion date. Please tell mw what you think the issue is so I can run these things by the mechanic. Thank you!

I need by car ASAP.

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  • Anonymous Feb 23, 2009

    Where is the ecm fuse located?

  • Anonymous Apr 14, 2009

    2004 sentra SE R specv nismo i use to hear a winding sound before i start the car but just now i dont and the car will not start it will crank though

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Try checking the crank position sensor. If it goes out the motor will turn over but not start.

Posted on Oct 07, 2009

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Well when my car would crank but not stay started it had lost the chip in my key...its a security feature in my car that when the chip is gone the car will crank but not start. Not sure if thats your problem but thats what my problem was...thats a cheap fix so I hope that is what is going on.

Posted on Apr 18, 2009

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The car backfiring into itself? impossible. bad divertor valves could cause the turbos to not properly spool. and bad n75 (boost control valve) could cause wastegate to stay open...but as far as that stopping the car from starting... no.. chances are he (your mechanic) either forgot to plug something in or broke a sensor or connector.
If anything else was changed with the turbos,make sure ecu is recoded to recognize the change,

Posted on May 14, 2009

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Where is the ecm fuse located on a 1998 chevy silverado?

Posted on Apr 26, 2010

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Check the ecm fuse it could have two fuse

Posted on Feb 15, 2009

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