I just installed a new APP Sensor hooked everything up correctly now my car will not start. Help!!

 

Does the starter spin when you turn on the ignition? If not, check your battery cables for corrosion and terminal clamp tightness, especially if you disconnected the battery to install the APP sensor.

What model and year vehicle do you have? This site is set up with model and generation-specific forums, so you might find answers in the forum specific to your vehicle.

Welcome to AZ.

 

You probably disconnected the throttle cable. No air.. no start.