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Re: coolant leak/check engine light
my mechanic found 2 hoses loose which he secured. now the po442 is gone. it is replaced by a po420 code. i took the car to buick. the results of the test are replacing the vapor canister purge solenoid, the cat, and the down stream oxygen sensor. i couldn't afford to let buick do the job. what would be a good cat replacement?
thankyou
pothound
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