cylinder mis firing

Asked by Guru9XNG8D May 19, 2021 at 06:48 PM about the 2003 Toyota 4Runner SR5

Question type: General

how many 02 sensors my 2003 toyota 4runner sr5 carry's

3 Answers
34,805

lrodri911 answered 2 years ago

There's a total of 4 Co2 sensors one on each side above catalytic (upstream) and one below (downstream) for each side.

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34,805

lrodri911 answered 2 years ago

Don't be fooled by the sensor codes, misfires are usually not caused by bad sensors, sensors detect an issue in that bank but not necessarily the sensor itself, usually caused by lack of fuel or spark. Most common issue are bad ignition coils.

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