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1997 GMC S15 O2 sensor

Tiny
JRZ1978
  • MEMBER
  • 1997 GMC S15
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 142,300 MILES
I've changed the o2 sensor like 5 times and the same one keeps going bad and when it gose bad it missfires and runs to lean and low volteg and engine light comes on again what could cause the o2 sensor to go bad
Thursday, October 23rd, 2008 AT 11:16 AM

1 Reply

Tiny
SWILLIAMS
  • MECHANIC
  • 597 POSTS
How are they failing? Does the engine use any oil or coolant? What kind of fuel mileage are you getting? Do you smell gas under the hood?
I ask because it is not a common thing for O2 sensors to fail that fast. Excess oil use or a coolant leak into the intake could be enough to damage them. Excess gas from a leaking injector or faulty pressure regulator could also do it.
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Friday, October 24th, 2008 AT 3:39 PM

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