9000 L4-1985cc 2.0L DOHC Turbo EFI (1987)
The mass air flow sensor maintains the temperature of the filament at a constant number of degrees above the temperature of the inlet air.
LH 2.2, aluminium: 100°C
LH 2.2 and LH 2.4, plastic: 120°C
LH 2.4.1 and 2.4.2, plastic: 155°C
The power needed to maintain the temperature of the filament at a constant level depends on the cooling effect of the air flowing past it. This cooling
effect varies with the air mass passing through the mass air flow sensor.
The variations in voltage, which are determined by the mass of the inlet air, are transmitted to the LH control module from the mass air flow sensor as
follows:
-M1987 fuel injection and -M1988 Turbo from pin 5 to pin 7
M1988- fuel injection and M1989- Turbo from pin 3 to pin 7.
Burn-off
