A4 (B6 Platform) Discussion Discussion forum for the B6 Audi A4 produced from 2002-2005

Starting Problems

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Old 03-05-2006, 08:14 AM
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Default Starting Problems

Anyone having starting problems?
2003 A4 automatic 1.8.
Mine dies right after it starts. I have to crank it 3-4 times before it will hold at idle.
Even when I press gas when it starts, it does not hold at idle and dies right away.
Appreciate any inputs.

Thanks

K
Old 03-07-2006, 03:36 AM
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Default Check for cracked or broken vacuum hoses, symptoms suggest the fuel/air mixture is to lean...m

cold engine needs extra fuel injected to provide a rich fuel/air mixture to start up quickly and not stall after starting. Vacuum leaks caused by bad hose/s will admit unmetered air into the engine. Being unmetered, the ECU does not add any additional fuel to that "false air" to compensate. The result is there is not enough fuel to start and continue running properly from cold.
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