You just put the volt meter behind the conntor of the sensor while it still plug in right? There 3wire black,gray,red/yellow. You check the red and black while the car is on the ON without engine running right. Also at 3500 it seem to be stalling out can this be cause by the tps? Man this suck really wanna drive and break in the motor
Cleaning the IACV atm hope this help out a bit.
Cleaning the IACV atm hope this help out a bit.