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1997 Chevy Cavalier

Tiny
EDWARDS60
  • MEMBER
  • 1997 CHEVROLET CAVALIER
Hi
I recently failed inspection for emissions NO2. I had changed the oil, spark plugs and wires before I went. The car idles petty smoothly. Going to change the gas filter next. Could the NO2 be the oxygen sensor? If it is could you tell me where it would be located.
This is for a 1997 chevy cavalier automatic 97,000 miles 4 cyl I couldnt find the engine size and I dont have a manual. Thank You
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Thursday, November 29th, 2007 AT 4:03 PM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
No2 is exhaust gas temperature. This is an EGR problem. If your is electronically controlled, you will have to have it looked at by a shop with the proper scannning equipment. If it has a vacuum line, use a pump to pull the valve on and see if the engine stumbles, if not passages are plugged and will need to be cleaned. If only has a plug, then it is probably the valve
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Friday, November 30th, 2007 AT 7:56 AM

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