how do i check which air/fuel ratio sensor i need to replace

1997 LEXUS ES 300
220,000 MILES
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ERIKA.GAVINA
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  • 2 POSTS
my check engine light went on and a diagnostic test gave me results to replace air/fuel ratio sensor and now the car doesnt want to turn on it just makes a clicking noise. help?
Oct 20, 2011 at 5:50 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
**No crank at all/nothing/nada when key is engage to starting position


Could be a blown fusible link, the starter, starter relay, clutch switch/park and neutral switch/transmission position switch and ignition switch assuming the battery condition and connections are good. Note:If it doesn't apply disregard.
Oct 26, 2011 at 2:29 PM
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ERIKA.GAVINA
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THANK YOU WAS THE STARTER, THE CAR DOES START NOW BUT ENGINE LIGHT STILL APEARS ON SO I GUESS I HAVE TO REPLACE THE AIR/FUEL RATIO SENSOR BUT HOW DO I KNW OR CHECK WHICH ONE OF THE TWO IS THE BAD ONE?
Oct 26, 2011 at 5:24 PM
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