TEST 5: Mitsubishi MAF Sensor Signal Wave Form
If you have access to an oscilloscope, this is what the mass air flow (MAF) sensor waveform looks like at idle.
If the MAF sensor is good then at idle and at any RPM, the waveform will stay perfectly formed. Also, as you accelerate the engine, the wave-length will become shorter while the wave amplitude stays the same.
Now, if the MAF sensor is bad, the waveform will have missing pieces or no waveform will be formed at all.
More 3.0L Mitsubishi Tutorials
You can find a complete list of 3.0L Mitsubishi tutorials here: Mitsubishi 3.0L Index Of Articles.
Here's a small sample of the tutorials you'll find in the index:
- How To Test Engine Compression (3.0L Mitsubishi).
- How To Test The Throttle Position Sensor (3.0L Mitsubishi Montero).
- Testing The Power Transistor, Ignition Coil, and Crank Sensor.
- How To Bench Test A Starter Motor (Step By Step).
If this info really saved the day, buy me a beer!