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2002 Buick Century 2002 Buick Century ENGINE CODES?

Tiny
FRANK777
  • MEMBER
  • 2002 BUICK CENTURY
Engine Mechanical problem
2002 Buick Century 6 cyl Front Wheel Drive Automatic 50 000 miles

THESE ARE THE CODES THAT CAME UPP
P0440- EVAP SYSTEM
P0303- ENGINE CYL NUMBER 3 MISSFIRE

FOR THE EVAP SYSTEM WHERE IS THE PURGE SOLENOID?THE SENSOR? THE PURGE VALVE?

A DIAGRAM WOULD BE PERFECT?

THE GAS CAP AND THE VACUUM LINES SEEM TO BE ALL GOOD

PLEASE LET ME KNOW ASAP?
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Thursday, November 26th, 2009 AT 11:04 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The one code may have been set from the gas cap not being tightened enough. You should hear 3 clicks at least when getting gas. It could also be the purge valve stuck. The number 3 misfire could be a bad plug/wire/ or injector not putting fuel in the cylinder. If you don't know how to check plugs or wires take it to a pro.
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Wednesday, December 2nd, 2009 AT 12:45 PM

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