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Oxygen sensor

Tiny
R_DIZZLE
  • MEMBER
  • 1998 JEEP GRAND CHEROKEE
  • V8
  • 4WD
  • AUTOMATIC
  • 154,109 MILES
How do you know if you have a bad oxygen sensor and will that cause the check engine light to come on?
Friday, November 19th, 2010 AT 5:14 PM

3 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
I'd check trouble codes before you did anything. Are there any driveability issues. I've seen 02 sensors cause the lite to come on. Without a code or something to point in the right direction, you have no way of knowing the cause.
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Friday, November 19th, 2010 AT 5:18 PM
Tiny
R_DIZZLE
  • MEMBER
  • 2 POSTS
I can't really say there have been driving issues but I've been told that I may be missing a sensor and I just got my car fixed last week and the light just came on again. Whenever I get a diagnostic it says I have a random cylinder misfire
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Friday, November 19th, 2010 AT 5:24 PM
Tiny
ASYNCTEA
  • MEMBER
  • 1 POST
When I had a bad oxygen sensor on my 98 JGC it acted sorta like a dirty fuel filter -powers loss, but sometimes power surges too -for instance when I was stopped at a stop sign. Don't know how typical that is, but both symptoms stopped when I had it replaced.
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Wednesday, November 24th, 2010 AT 11:18 PM

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