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1988 944s airflow sensor

Fuel System

Vehicle Information: Model(924/944/968): 944S; Year: 1988; Body Type: Coupe; Total Mileage: 145000;

I am looking for information on testing the air flow meter. I have heard reference to a temperature sensor in it. The car starts hard in warm weather [two long hard cranks]. It seems to start well now during cold weather. I have replaced all the vacuum lines, resealed the injectors, and replaced the fuel pressure regulator. Fuel pressure is fine, making me think it is not only temperature related but possibly the air flow meter over the engine temperature sensor.

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