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'97 a4 P0302 - cylinder #2 misfire,

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Old Sep 25, 2009 | 03:50 AM
  #1  
Race515facE's Avatar
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Default '97 a4 P0302 - cylinder #2 misfire,

new plugs and ignition coil. both worked fine when swapped with cylinder #1...still said #2 was bad.

refurbed fuel injectors for 30 bucks...thinkin about goin for that next unless anyone has any info.

thanks
 
Old Sep 25, 2009 | 09:20 AM
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16686/P0302/000770 - Cylinder 2 Misfire Detected
Possible Causes
Ignition system
Fuel injectors
Fuel pressure
Running out of fuel
EVAP canister purge valve
Evaporative emission system
Low compression
Base engine problems
Controle Module damaged
Special Notes
This feature search for engine misfire in a specific cylinder. Most of the time the cause for a misfire is a lack of combustion in a cylinder due to absence of spark, poor fuel metering, or poor compression.
 
Old Sep 26, 2009 | 02:13 PM
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thanks for that list crazyhawk...i think its the ignition system.

tested for spark on cyl. #2 and nothing. its not the coil and its not the spark plug...wiring harness plugs right into the coils so what else is there?
 
Old Oct 19, 2009 | 11:30 PM
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When does it occur?

If it's in the morning or on cold start check the cylinder for oil or coolant.
oil = valve seals, most likely
coolant = head gasket, most likely
 
Old Oct 20, 2009 | 03:09 AM
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thx for tryin to help man.

#2 just doesnt run at all...i tested for spark and no spark. coil and plug both worked in other cylinders. plug doesnt come out with oil on it. at TDC, it doesnt look like anything is leakin on the piston, but still doesnt mean its not happenin. ignition coil connection looks fine...i cant figure it out so i gotta dish out 150 bucks for a shop to tell me whats wrong...i'll try n remember to post up the problem. its got a few other people scratchin their heads too.
 

Last edited by Race515facE; Oct 20, 2009 at 03:13 AM.
Old Oct 20, 2009 | 09:09 AM
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Check the ignition control module. They cause cylinder 2 misfires.
 
Old Oct 20, 2009 | 12:50 PM
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is that the big box you follow the coil wires into, infront of the driver side under the hood?
 
Old Oct 25, 2009 | 09:41 AM
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It's on the air box.
 
Old Dec 15, 2009 | 10:09 AM
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finally got around to it, it was the control module. dealer wanted over 300 for it, found one for 60 bucks online.

thanks a lot foreveryones input, much appreciated!
 
Old Feb 18, 2010 | 08:52 PM
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Make sure you you have fire at that plug. You can buy a hand held spark tester for quick checks at the local parts store. It looks like an ink pin and you hold it against the plug wire or you can hold it on top of some coil on plug systems. If you have spark next check for fuel. Try to listen to the fuel injector when the engine is running. If it clicks you know the injector is at least trying to work. You could have a plugged injector or bad injector. Good luck.
anthonyz Tony@zippyoil.com
 



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