1999 Audi A6 Why is my car still missing on multiple cylind

1999 AUDI A6
212,000 MILES • 6 CYL • AWD • AUTOMATIC
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JEN1234958
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  • 1 POST
I recently bought my audi a6 wagon and did a motor swape b/c the other enginge blew....so i put one in with 68,000 miles. Before I bought the car it sat for 3 months. I put new gas in and it ran better...but now I drive it has random missfires...I changed...spark plugs & wires, o rings,coil pack, intake gasket,cleaned out the intake completly And know it missfires when you go up a hill and coast down the other side and start to give it gas again it starts to miss.Please help!!!
Jun 4, 2010 at 7:33 AM
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MHPAUTOS
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Hi there,

You need to get a run on a chassis dyno, this will be able to be loaded up to simulate actual road driving loads, and the ignition & fuel system can be viewed electronically to check for any faults, i would get this done.

Mark (mhpautos)
Jun 4, 2010 at 8:12 AM
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MINHNGUY
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One of the power transistors ( located on the air filter box ) does't work.
Sep 11, 2011 at 5:10 AM
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