My engine light comes on Symptoms are fast idle at about2500rpm on 2003 Ford Windstar

happens irregularly tested code P1120 came up

Asked by for the 2003 Ford Windstar
Possible throttle position sensor sticking and not returning to closed throttle or idle! May cause a crank no start condition really rather common on this vehicle, at least at the shop anyway. SCAN TEST will find the problem!
What is a SCAN TEST
When a mechanic uses a scanner, not a parts person with a code reader, to look at the same thing the computer sees is a scan test. A must have for this kind of repair. You have never heard of this???