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2004 Chevy Monte Carlo Diagnostic emission

Tiny
MOWMEN
  • MEMBER
  • 2004 CHEVROLET MONTE CARLO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 65,232 MILES
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
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Wednesday, June 25th, 2008 AT 5:51 AM

3 Replies

Tiny
RHALL77
  • 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
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Wednesday, June 25th, 2008 AT 8:13 AM
Tiny
MOWMEN
  • MEMBER
  • 1 POST
The code coming up for the lite is PO455. Thanks, Joe
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Saturday, June 28th, 2008 AT 7:26 AM
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
Have you had a leak test performed on the vehicle at the dealer. They have a smoke machine for this
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Saturday, June 28th, 2008 AT 11:13 AM

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