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Would a bad mass air flow sensor cause the engine to idle rough and start hard when hot in a Taurus - Sable?
Wiki User
∙ 10y ago
Answer:
The Mass Air Flow Sensor is probably a lesser culprit than some other possibilities in a Ford. Usually the effects would be felt while at speed and trying to accelerate since the micro filament used in many Ford models tends to fail while accelerating (even in park while simply pressing the gas quickly).
The problem is finding the actual source of the trouble if the MAF is not At Fault. Start with the fuel filter and air filter(since they are the easiest to check and the cheapest to replace), then you may want to have the throttle position sensor tested. If neither of these are the problem, you may need to have your starter, battery, and or fuel injectors examined. Without hearing the engine and playing around with it a little bit, it's hard to diagnose this type of problem.
It would also depend on the year it was made and which engine is in the chassis.
If it does turn out to be the MAF, you probably will not be able to buy the part from anyone except Ford.
Answer:
The MAF helps the engine to calculate the timing of fuel delivery, and spark advance. It certainly could lead to rough idling, but probably would not contribute to a hard start when the engine was already hot.
Wiki User
∙ 10y ago
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