Help me please.....The code came up as air temp sensor faulty circut on my 91 montero v6 300 but no one seems to have heard of the part, could it be built in to the air flow senor?? Please post before I get more of a headache than loritab can handle....

 

You said IAT, did you mean IAC? There is no air temp sensor. However, there is an engine temp sensor (I think)

 

The code it pulled was "faulty circut-air temp sensor" unless the mass air flow sensor has a air temp sensor built in it ??? I am lost. air flow sensor is $200.00 so I am trying to figure this out....anyone know?