I'm Back! '90 GTUs

[Pete_89T2]

Originally Posted by TitaniumTT

MAF cleaner will do nothing for an AFM. AFM is just a door and the sensor measures resistance and figures how far open it is to calc airflow.

Oh wait.... S5 right?

S5 is still an AFM; the guts of it still uses a variable resistor. Instead of a hinged flapper door like the S4's use to change the resistance with airflow, the S5's use a sliding cone to do the same thing. S4 & S5 AFMs are not interchangeable; different electrical resistance vs. airflow curves and connector pin outs.