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Lauren M
Guest
I am working on a 2002 4 Runner that has a surge problem I can't figure out. It is surging at part throttle and is not an engine miss. It has new OEM plugs and wires. If I unplug MAF sensor surge goes away. I replaced it with a new after market MAF sensor and still surges like before. Throttle Position Sensor shows good as well as oxygen sensors and no codes. I will appreciate any ideas...