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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
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#1 (permalink) Old 10-21-2004, 01:03 PM
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Well 3 days ago i changed the Camshaft Sensor on my 318 (I heard that this was a common problem on 318s and had a code that described cam sensor malfunction) and now is fixed. Then yesterday morning i changed my plugs with BMW NGK's 4+ (the dealer recommended those for my car).
And today i got another code (P0420 = the PCM determined that the catalytic converter is not working proprely). ghead

Does this mean that my Cat is clogged? Could it be because of the new plugs i put on the car? (the plugs are stock) what should i do?

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#2 (permalink) Old 10-21-2004, 01:33 PM
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Are you sure the NGK +4's are stock? I thought the NGK +2's were stock.
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#3 (permalink) Old 10-21-2004, 05:14 PM
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Well i bought these from the dealer, the boxes said "BMWGroup NGK" or something like that. I even asked the guy from the service dept. and said that those plugs are for my BMW.

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#4 (permalink) Old 10-21-2004, 05:16 PM
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and the code says "Cat. system below threshold in bank 1" what does bank 1 means?

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