Okay I have read multiple threads about checking these items and the procedure being in the Bentley. Well I have a Bentley, and other than making sure the opening on the AFM moves smoothly, I can’t find an electrical test to perform on it. Is this correct or how do people know they have a bad AFM and should replace it? Now on to the TPS, there is an electrical procedure for this, so here it is:
Test the switch by checking for continuity at the switch terminals. Connect an ohmmeter between terminals 2 and 18 (front and middle). Open the throttle part way by hand. Slowly let the throttle return to its idle stop. There should be continuity at the terminals when the throttle lever is approximately .20 - .60 mm (.008 - .024 in) from its stop. Then connect between terminals 3 and 18 (back and middle). Open the throttle slowly. There should be continuity when the throttle switch is within 10 + or - 2 degrees of the full-throttle position.
It then says that you can adjust the sensor position by loosening the screws and check it again. This surprises me since it sounds like most guys just replace them instead of adjust them. Are you guys trying to adjust them and no matter what you never get continuity at the terminals?