Question about 2005 Toyota Corolla
If you have a scanner try doing an active test on a/f control. Switch the injection volume between +25% and −12.5%, then read the A/F sensor and oxygen sensor voltages. If both sensors react then they are not the issue. Your O2 sensor should vary .4v - .6v and your a/f sensor should vary 3.0v - 3.35v. The A/F sensor output has a few seconds of delay. The heated oxygen sensor output has 20 seconds of delay at maximum. Otherwise is could be an exhaust leak.
Posted on Jun 28, 2009
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Posted on Jan 02, 2017
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