2004 Chevy Monte Carlo Diagnostic emission

2004 CHEVROLET MONTE CARLO
65,232 MILES • 6 CYL • 2WD • AUTOMATIC
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MOWMEN
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  • 1 POST
I can,t get my car inspected because of the emission test . Autozone told me the service lite was a gas cap or emission leak I changed the cap but after driving about 150 miles the lite comes back on. The inspection test gives three not ready tests 1.) catalyst 2.)evaporative system 3.) O2 sensor Thanks, Joe
Jun 24, 2008 at 10:51 PM
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RHALL77
  • ✓Experienced Mechanic
  • 3,361 POSTS
what code are you getting. it could be a possible a vent valve also causing a leak or a charcol canister
Jun 25, 2008 at 1:13 AM
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MOWMEN
  • MEMBER
  • 1 POST
The code coming up for the lite is PO455. Thanks, Joe
Jun 28, 2008 at 12:26 AM
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RHALL77
  • ✓Experienced Mechanic
  • 3,361 POSTS
have you had a leak test performed on the vehicle at the dealer. they have a smoke machine for this
Jun 28, 2008 at 4:13 AM
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