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jazzmaster, ASE Certified Technician
Category: Oldsmobile
Satisfied Customers: 2462
Experience:  I have 32 years experience as a automotive tech,plus ase certified
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Oldsmobile alero 2.2 Oldsmobile alero 2.2. code P0442. I bought

Resolved Question:

Oldsmobile alero 2.2. code P0442. I bought a new gas cap. Change the Purge Valve and the vent valve. After 730 miles the Check engine light came back on. Once again gave me the P0442 code. Could it be the canister?
Submitted: 3 years ago.
Category: Oldsmobile
Expert:  jazzmaster replied 3 years ago.
hi, this really needs to be smoke tested to determine the leak ,it may be worth it to get this done before you spend any more money to replace parts that are not needed,I have seen a few canisters that have gone bad ,be it full of dirt or just broken or cracked from where there are sitting ,but using a smoke testing machine ,will show you where its leaking and take away any guesswork ....guy...
jazzmaster, ASE Certified Technician
Category: Oldsmobile
Satisfied Customers: 2462
Experience: I have 32 years experience as a automotive tech,plus ase certified
jazzmaster and 3 other Oldsmobile Specialists are ready to help you

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