MAF sensor removal

The mass airflow sensor measures the air entering the engine so the ECU knows how
much fuel to match it with. It is a heated wire or film, and it does not like oil, dust or
an over oiled aftermarket air filter.

A contaminated MAF under reads, the car runs lean, and you get hesitation, poor
economy and eventually a fault code. Cleaning one properly, or replacing it, usually
resolves it. Running an engine on the backup calculation instead is a compromise, not a
fix.

What we would rather do first

Most of the cars that arrive asking for removal do not need it. They need the
underlying fault finding and fixing, and the system putting back into a working
state. That is diagnostics, and it is a real service rather than a way of hiding a
warning light.

We have the diagnostic equipment and the rolling road to prove a repair worked
rather than assume it did. If a repair is not viable and the vehicle is genuinely
off road, export or competition, we will talk about the alternative.

For the trade

This is one of the jobs available through our dealer file service. Send the
original read, tell us the vehicle and what you need, and the file comes back
checked. If a job carries mechanical conditions on the car, they are listed in the
coverage table below and they apply to your customer’s vehicle too.

More about becoming a JFA tuning dealer