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|3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.|
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Originally Posted by vet-racer
thank's what's AFM...
Originally Posted by Starmavin
The difference between AFM Air Flow Meter and MAF Mass Air Flow is that the AFM measures the "volume" of air by a mechanical door (flapper) the MAF measures the actual "mass" and density of the air by measuring the resistance of a heated filament, the more air passing the cooler it gets and less resistance....
Also check your fuel pump relay too. Check your wires and plugs, if they a very old you may want to replace them older wires and enlarged plug gap makes the coil work harder and heat up then short out causing the car to die.
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