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Posts Tagged: MAF Sensor

MAF Sensor — What is a MAF sensor?

What is a MAF sensor and how does it fail? Mass Airflow Sensor — MAF A mass airflow sensor (MAF) attempts to measure the density of the air coming into the engine. A mass airflow sensor sensor measures air density using either a hot wire or a hot plate and a separate incoming air temperature sensor. The wire or sensor is first heated to a set temperature. Air flowing past the hot wire or plate cools it. The mass airflow sensor then applies more current to reheat the wire or … Read More

Backprobe an electrical connector

How to backprobe an electrical connector Two ways to backprobe When you’re checking live voltage readings on sensors, the challenge is How to backprobe an electrical connector. Some pros stick a pin through the wire. That works, but you must make sure you seal the insulation when you’re done. If you don’t, the pierced insulation will allow corrosion to set in. Buy piercing probes But these piercing claws from Ferret make the job much easier. Isolate the wire carrying the signal you want to monitor. Then position the wire in … Read More

Clean a MAF sensor

How to clean a MAF sensor They say it can’t be done. But at $300 a pop for a new MAF sensor, you’ve got only $6 to lose. Any DIYer can clean a MAF sensor. Just pick up a can of CRC MAF sensor cleaner. Where is the MAF sensor located The MAF sensor is located between the air filter and the throttle body. Disconnect the sensor from the air duct Then disconnect the electrical connector Locate the sensor element Locate the small circular opening inside the  sensor. Aim the … Read More

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