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Recently, I got a error code of P0172, that indicate mixture correction (bank 1) rich,
Actually, air filter and spark plug have been replaced,
I sent car to Spark Car service, they only erased error. but later it come out again. They asked me to go to Komoco.
Can I go there, KOMOCO my slaughter me. their service are really expensive.
my avante is only 4 years. and 70k mileage.
by the way, I found the engine shake heavily when idling.
Pls help on this
Thanks a lot.
 

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Recently, I got a error code of P0172, that indicate mixture correction (bank 1) rich,
Actually, air filter and spark plug have been replaced,
I sent car to Spark Car service, they only erased error. but later it come out again. They asked me to go to Komoco.
Can I go there, KOMOCO my slaughter me. their service are really expensive.
my avante is only 4 years. and 70k mileage.
by the way, I found the engine shake heavily when idling.
Pls help on this
Thanks a lot.
Look like your 02 sensor and engine mounting points needs attention.
 

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no evidence this is an o2 sensor and i would suspect the engine shaking is due to the rich conditions - not an engine mount.

may also indicate that one cylinder is affected which would throw the balance of the engine off.

i would start looking for an injector sticking open. checking what condition the plugs are in is going to be of help here:



expecting to see one with carbon fouling if this is a single cylinder running rich.
 
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