Chuck and Frank.....hold open the throttle? there is the air sensor plate and the throttle butterfly.....I know once the car runs...which it does for 20 seconds or so the air sensor plate needs to open...I was assuming it was opening because the car starts and runs for a brief period of time. Can the motor run without the air sensor plate opening? I need to get my butt out of the drivers seat and see what is going on.....Whats interesting is that while the car runs(20 seconds or so)....at a low idle....stepping on the accelerator doesnt seem to do anything. I should make sure the accelerator pedal is opening the throttle butterfly. The throttle is the butterfly the accelerator cable moves not the air sensor plate. Chuck the the air valve doesnt need to come off to determine air valve operation? I had my the air valve off my other 280 years ago..probably after the head was removed...I remember it being stuck and using hot water to test it I was able to get it working again....cleaning and lubrication. I look at where it is located....from on top of the motor and shudder when thinking about if it has to be accessed from underneath the intake manifold. If I could convince myself it is working w/o removal I am interested.