Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Commonly Used Abbreviations - General Information: "M"
- mA
-
Milliamps
- MA or MAF
-
Mass Airflow
- MAFS
-
Mass Airflow Sensor
- MAP
-
Manifold Absolute Pressure
- MAT
-
Manifold Air Temperature
- Mem.
-
Memory
- MEM-CAL
-
Memory Calibration Chip
- mfd.
-
Microfarads
- MFI
-
Multiport Fuel Injection
- MICU
-
Multiplex Integrated Control Unit (Acura/Honda)
- MIL
-
Malfunction Indicator Light
- MPI
-
Multi-Point (Fuel) Injection
- mm
-
Millimeters
- MPH
-
Miles Per Hour
- mV
-
Millivolts
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.