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.
Airflow Meter
Airflow meter measures the amount of air aspirated and provides a signal to the control unit. The aspirated air applies force to the flap so that its opening angle is balanced with the return torque of the helical spring. The flap shaft is connected to a potentiometer, which corresponding with its opening angle, provides a voltage signal to the control unit.
After engine start-up, a set of contacts are closed to signal fuel pump operation. See Fig 1 .
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.