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2.2L L61 Performance Tech 16 valve 145 hp EcoTec with 155 lb-ft of torque

read my CEL...

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Old 02-07-2011, 01:59 PM
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read my CEL...
P0420- Low emission efficiency. Anyone know what might be wrong? car has 93K on it
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Old 02-07-2011, 03:20 PM
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Put a cat in it.
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Old 02-07-2011, 04:34 PM
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Originally Posted by BLKLS
Put a cat in it.
it has the cat. stock DP
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Old 02-07-2011, 04:35 PM
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its toast replace it
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Old 02-08-2011, 12:14 AM
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^put a cat in it.
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Old 02-15-2011, 09:41 AM
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your cats gone... also check your o2 sensors... they may be the reason that... and all together now! you cat is gone
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Old 02-20-2011, 04:09 PM
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how much is the cat?
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Old 02-20-2011, 04:16 PM
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try an o2 sensor first. the one you wanna replace is the second one. farthest away from the engine.
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Old 02-20-2011, 09:51 PM
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Originally Posted by devon9832
how much is the cat?
new DP from gm....which is what i have to have....becuase i live in stupid california...is $342.
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