PLEASE help !!! Code P1121
I have a 98 with a 4.6w with 130K miles. It has left me stranded 2 in the last two days because it will run fine for about 30 miles/ 30mins... then it won't idle and stalls.... if i try and start it again, i have to hold the go pedal to the floor and if it starts it runs REALLY rough. The codes i've gotten are 1121, and a high circuit input IAC, and a high circuit input for the coolant temp sensor as well.
does anyone have any idea what might cause the truck to just start running this poorly? I cleaned the MAF sensor but i'm feeling that might be the problem sensor. any thoughts?