Engine random misfire?

1998 TOYOTA 4RUNNER

71,475 MILES • 6 CYL • 4WD • AUTOMATIC

CAMPBELL ADENODI

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At first instance using SCANTOOL - OBD2 it displayed "RANDOM MISFIRE DETECTED" and all the 6(Six) plugs were replaced and firing was regular with optimum speed attained.

Thanks guys.

Dec 11, 2009 at 3:30 AM

SQM

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Hello,

Sometimes random misfire happens when there is an issue with either coils or ignition control module. I have attached ignition coil testing and few other info you might find helpful.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Let me know of any questions.

Thank you.

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Jul 15, 2021 at 6:32 AM