No spark

1999 TOYOTA 4RUNNER

200,000 MILES • 3.4L • V6 • 2WD • AUTOMATIC

NORUN4RUNNER

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Replaced RCU with an ECU that has been flashed so that the transponder is disabled and the center ECU plug is not plugged in. I have replaced coils, wires, plugs, igniter and crankshaft positioning sensor still no spark. Checked with test light and everything gets power but no spark past coil.

Sep 27, 2018 at 5:27 AM

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These cars had a problem with the ignition ignitor but to be sure lets check for power and ground for the PCM. Here is a guide to help you confirm the issue and the engine wiring diagrams so you can see how the system works:

https://www.2carpros.com/articles/how-to-check-wiring

If everything looks good I would replace the igniter.

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken

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Sep 29, 2018 at 11:53 AM