o2 sensor grand cherokee

1994 JEEP GRAND CHEROKEE
V8 • 4WD • AUTOMATIC
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RICKHOLLAR
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  • 1 POST
Replaced o2 sensor 94 grand cherokee limited. It still runs crappy. Do I HAVE to reset the cp
Nov 24, 2010 at 11:33 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Any applicable mil codes? How long since overall tune-up? Why did you replace the 02 sensor?
Nov 24, 2010 at 11:42 AM
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CARADIODOC
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"Crappy" can be interpreted a lot of different ways. Without real symptoms, clues, and observations, it is impossible to know which way to start looking for the cause. Based on an oxygen sensor's values, the Engine Computer will modify fuel delivery a maximum of plus or minus ten percent. You will not likely notice that while driving but it will have an adverse effect on tail pipe emissions when the sensor is not working properly. If you have a misfire condition, sluggish performance, or stalling problems, the oxygen sensor has nothing to do with that.

caradiodoc
Nov 24, 2010 at 11:45 AM
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CARADIODOC
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Hi JDL. Sorry for the double reply. Hope they add a button that lets us delete our replies when appropriate.

caradiodoc
Nov 24, 2010 at 11:46 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Hey man, no problem. I do it also. Have a good day.
Nov 24, 2010 at 12:30 PM
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