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2002 Audi A6 car is shaken bad, reading cylinder 2 misfire

Tiny
NICK80
  • MEMBER
  • 2002 AUDI A6
2002 Audi A6 6 cyl All Wheel Drive Automatic

car begin shaken and check engine light came on, took it to local place and had placed on computer. Reading a cylinder 2 misfire detected, what the possible problems be. Spark plug was switched still reading and acting same. Friend said it was the coil pack but no way to be sure. Wanna ball park idea before I take it to mechanic. Car is very expensive to fix and dont wanna be mislead by mechanic
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Wednesday, March 18th, 2009 AT 5:20 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
P0302 Misfire should prompt you to check sparkplug/compression/injector for that cylinder.

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
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Wednesday, March 18th, 2009 AT 6:35 PM
Tiny
MINHNGUY
  • MEMBER
  • 3 POSTS
After all the tests you have tried but still the same, then you should check the power transistors. That cost around 200 bucks.
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Sunday, September 11th, 2011 AT 5:31 AM

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