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2002 Chevy Impala

Tiny
JELLJELL
  • MEMBER
  • 2002 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 122,000 MILES
What can be my problem I got the code scanned for o2 sensor on my 2002 Impala. I changed both sensors and after 2 days the check engine light came back on and the code came back o2 sensors. Can someone held me
Friday, October 30th, 2009 AT 9:52 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,583 POSTS
O2 sensors are funny. If you get dirt, grease. On them, they won't work. Also, if you drop them if can cause a problem, esepcially the heated sensor. Becfore removing them, have the computer scanned again so you know which to target. Once you've done that, remove it, check that it is clean (do not clean it with any type of cleaner) but you can use a dry clean cloth. Also, make sure the wiring is in good condition and the connection is complete.

Let me know what you find.

Joe
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Sunday, November 1st, 2009 AT 8:35 PM

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