Have a 02 f150 w/ 4.2l v6. Started choking while driving throwing code p1120 and p0505. Cleaned maf sensor, changed tps sensor. Nothing changed. Any one have problems with this. Checked fuel pressure. Checked vaccum at egr and at pcv valve. Someone said it could be a intake gasket leak?

 

DTC's, -

P1120 - TP Sensor Out Of Range Low (Ratch Too Low)

P0505 - Idle Air Control (IAC) System

 

Need to do better than that, -

Did it begin acting up at cruising speed, or just after ?

Will it idle ?

Define choking out...under all loads ?

Any work done prior to the problem ?

Going with EGR valve hang for now. Stuck open, or taking it's time to close after cruising speeds.