PAT Air Mass Meter AFM-133
SKU: AFM-133
PAT Air Mass Meter: Your Reliable Mass Air Flow Sensor
Positioned between your air filter and throttle body, the PAT Air Mass Meter is a vital component of your engine management system. It gauges the volume of incoming air and often incorporates the Intake Air Temperature Sensor (ATS) as well. The information it gathers assists your engine's ECU in achieving the correct fuel mix, ignition timing, and occasionally, transmission shifting.
How Does It Function?
- Within the Mass Air Flow Sensor, there exists a small, electrically heated wire. Another sensor in close proximity monitors the wire's temperature.
- At idle, minimal air flows over the wire, keeping electrical requirements low to maintain the wire's heat (approximately 200 degrees Celsius).
- When the throttle is opened, the rush of air cools the wire. To restore the temperature, more electricity is channelled through – the greater the airflow, the more power is required.
- This electric current directly signifies airflow volume, providing your ECU with the necessary data to accurately inject the appropriate amount of fuel.
Potential Issues
A malfunctioning Mass Air Flow Sensor can lead to numerous issues: rough idle, lacklustre performance, black exhaust smoke, poor fuel economy – you may even see a warning light on your dashboard. The primary issue is contamination of the hot wire. Accumulation of dust, dirt, or oil residue can prevent accurate airflow readings. While newer Mass Air Flow Sensors are designed to mitigate this problem, they are not invincible. Oily aftermarket air filters are a frequent source of contamination.
Identifying the Issue
Verify the sensor's signal with the appropriate scan tool or oscilloscope and compare it to the specifications for your vehicle. Warning codes on your dashboard can also signify a problem (be aware of codes starting with P0068, P0100, P0101, P0102, P0103, P0104). Naturally, don't overlook the basics! Intake leaks or faulty wiring can also affect the Mass Air Flow Sensor.
PAT Emission: The Ideal Solution
PAT Emission offers over 340 high-quality Air Flow Meters and sensors, catering to millions of vehicles across Australia and New Zealand. Choosing PAT means opting for parts constructed to your car manufacturer's standards, ensuring the perfect fit and function.
Warranty: 12 Months
* For correct fitment ensure the vehicle is listed in the compatibility list AND read any notes associated with the product. If there are no vehicle details listed, please send a message.
| SKU | AFM-133 |
| Model # | AFM-133 |
| Barcode # | 9341554001374 |
| Brand | PAT |
| Assembled Length | 0.010m |
| Assembled Height | 0.010m |
| Warranty | 12 Months |
| Contains Liquid | No |
Packaging note: PAT products may be supplied in PAT Premium packaging instead of the manufacturer's original box.
PAT sources EFI and engine-management parts from established OE-type manufacturers and repackages some of them in Australia. The manufacturer inside can change between batches as supply changes — for example, a part once made by Hitachi may now come from Bosch. Every unit is an OE-type part from a recognised manufacturer.
Packaging: Manufacturers periodically update their packaging and labelling. You may receive the current or a previous design — the product, formulation and part number are unchanged.
Fitment (vehicle-specific products): Vehicle fitment is based on manufacturer and supplier catalogue data and is kept as accurate as possible, but vehicle catalogues are not perfect. Some models had more than one part fitted depending on build date, engine, or component size/variant, and parts on older vehicles may have been replaced with non-original or different-style components.
Before you buy, compare the product images with the part currently fitted to your vehicle — check shape, size, connectors and mounting points. If the part on your vehicle looks different, please contact us before purchasing. It is the buyer's responsibility to confirm the part suits their vehicle before purchasing.
Not sure? Message us with your vehicle's registration number and state (preferred), or full VIN/build details, and we'll do our best to confirm fitment before you buy.
Parts returned because they do not suit the vehicle, where the listing matches the manufacturer's catalogue, are treated as a change of mind and must be unused, uninstalled and in original packaging. Nothing in this notice affects your rights under the Australian Consumer Law.
