cyls. 2&3 random misfire DTC PO300

[Brianbewley]

1997 4runner 2x4 Limited has DtcPO300 random missfire cyls. 2&3. Any suggestions. have replaced all spark plugs boots wires #3 coil mass airflow meter o2 sensor. Help please!!!!!

 

[quicksilvr]

1997 4runner 2x4 Limited has DtcPO300 random missfire cyls. 2&3. Any suggestions. have replaced all spark plugs boots wires #3 coil mass airflow meter o2 sensor. Help please!!!!!

Fuel filter and fuel injectors. Fuel filter is diy, and pretty cheap. For the injectors, take them all out and send them to WitchHunter.

WitchHunter Performance - Injector Cleaning & Flow Testing Services

It could also be one of the other coilpacks. But normally you'd get a cylinder specific code for coilpack issue.