Have Ford Questions? Ask a Mechanic for Answers ASAP
Hi, I’m Cary and I’ll be helping you today.Please understand that I can't smell, hear, or touch the vehicle, so patience is appreciated. Before leaving the site make sure and leave me a rating. You can still reply to me as many times as needed, even after the rating..
Are you replacing the sensor or the entire housing?
Sorry. Wrong I had the wrong year. Just the sensor I assume?
The 2003 Ranger 2.3L only had a cam sensor mounted on the valve cover and reads a trigger wheel on the cam shaft. Are you sure it is a 2003?Can you give me the VIN#?
Did you have any code at any time?
What other parts, if any have you already replaced to fix this problem besides the fuel pumps?
Manual or automatic transmission?
Sorry for all the questions, but I need you to be my eyes and ears on this truck since I cannot see it.
Does it do it only in gear while driving or can you duplicate it in neutral while revving the engine up?
Did it do this with the old clutch?
Can you list all the sensors and parts you replaced and also, does it do it constantly or intermittently?
Ok. I think we are on to something.
The TPS uses reference voltage to send a signal back to the PCM (Engine Computer) to tell it the throttle position. You may need to inspect the wiring from the TPS to the PCM. Make sure there are no shorted wires in the harness.
Not right now. The return signal circuit for the TPS to PCM may be the issue shorting out VREF as we call it and causing the problem you have.
You are not shorting out VREF (Reference voltage) that the sensors need to send the proper signals back to the PCM.
The BROWN/WHITE striped wire should have 5 volts with the key turned on and the engine off. You should not have any voltage on the other two wires.
The GRAY/RED striped wire is signal return to the PCM.
Disconnect the battery, PCM and the TPS sensor and check and make sure none of the 3 wires are shorted together for the TPS sensor using and OHM meter or digital multimeter that can measure OHMS (resistance).