Blog about mostly the first version of Toyota Previa.
Previas are affectionately called "eggvans", "eggs", or "beans", because of their shape.
They are reliable and fits in a normal swedish garage. Mid engine makes them very road worthy.
They will become classics..
Toyota at it's prime; within the 90-era everything from Toyota was bulletproof, from the Lexus ls400 to corolla (including Starlets and Previa)
Monday, February 6, 2017
Air Flow Meter or map sensor system?
The 2tz-fe with an AFM (Air Flow Meter) has got an air box similar to this one, this picture is from an early 2tz-fe.
Those with a map sensor don't have a mass air flow sensor connector to the air filter box.
On this car there is a IAT ( Intake Air Temperature Sensor ) instead of a Mass Air Flow meter. The IAT monitors the temperature of the air entering the engine. The engine computer (ECU) needs this information to estimate air density so it can balance air air/fuel mixture.
Early Toyota Previa with Air Flow Meter on top of intake box.
IAT sensor on top of plastic intake.
The IAT is basicly a thermoresistor. Resistance changes according to temperature. Measured in Ohm. When heated up it probably will reduce its resistance.
Close up on IAT ( Intake Air Temperature Sensor )?
Colder air is more densed than warmer air and the fuel mixture is adjusted accordingly.
This connection goes to the ABS. Will find another one on the other side.
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