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Re: Doesn't stay running
Their is a few ways to test the throttle position sensor. One way is to hook up a scaner and go to the data menu. Their will be a place in the menu that will say tps % and tps v. You want to watch the one with the v. The v stands for volts from the t.p.s. Basicly the t.p.s. is a variable resistor. The further you depress the the throttle the more or less volts you get from the t.p.s. The voltage should gradualy go up as you slowly depress the pedal. If the voltage jumps around then the t.p.s. is bad. Another way is to get a volt meter and remove the connector to sensor, touch the contacts on the sensor with the sensor still hooked up and have a friend depress the pedal slowly.
You can find the tps on the opposite side of the cable on the throttle.
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Did you do a fuel pressure test with a fuel pressure gauge ? The throttle positioner ? ? ? ? It's TPS - throttle position sensor. I suggest you take it to a ASE certified repair shop . Or go to youtube an check out some basic diagnostic trouble shooting videos . What year , make , model vehicle do you have ? You should have a factory scan tool or at lest a professional grade one hooked up an have engine sensor data parameters looked at . If you don't know what these are , I strongly suggest you take it to a repair shop.
Improperly connected or faulty knock sensor.
Idle Stop Solenoid
Damaged, loose, or faulty idle stop solenoid.
Air Cleaner Temperature Sensor
Damaged or faulty air cleaner temperature sensor or air cleaner temperature sensor circuit.
Error Code: P0221 Description:
Throttle Position (TP) Switch/Sensor B
Accelerator Pedal Position (APP) Switch/Sensor B Range/Performance Problem Possible Cause:
- Accelerator cable adjustment.
- Throttle position (TP) switch/sensor .
- Accelerator pedal position (APP) switch/sensor.
- Check valve clearance, adjust if required.
PO121---ETC Throttle Position (TP1) sensor Circuit Range Performance
PO505---Idle Air Control System Malfunction
PO2106---Throttle Actuator Control System-Forced Engine Limited Power
Just take it back to whom ever did the work,they are totally incompetent or don't know Fords
These are not easy to diagnose but I do all the time in my driveway,with all the factory manuals & professional tools & test equip,but no reason this comes up on fords & lincolns & a dealer in most cases can't resolve
Take too long to explain & you wouldn't grasp it anyway
From your description it looks like you have a defective TPS (The TPS is the position sensor on top of the throttle body that you are disconnecting).
Signal from the TPS is very important for different vehicle's functions. Among other thing the TPS output is used by the electronic ignition system to determine the fuel mixture being injected and by the automatic transmission to determine when to change gear. In your case the transmission was probably not shifting into higher gears, for that reason the engine was not revving above 2K rpm.
The TPS can be tested reading voltage at its terminals while someone operates the throttle pedal. Voltage must increase/decrease smoothly and stay in range, otherwise the TPS must be replaced.
As said at start your problem is likely a defective TPS. The fault is quite common and it is fixed replacing the TPS.
checked the idle control valve next to the throttle position sensor? Remove it and spray the passageway out with carb cleaner, then clean off the valve end (don't turn it while cleaning) Don't loose the "o" ring on the part either. Before doing that though make sure all the vacuum hoses are attached and not cracked or broken. Other than that, you may have a bad throttle position sensor or map sensor. Check (test) them before buying...they are expensive and you don't want to buy stuff you didn't need! You have the advantage here. I can't see the car. You can, and need to test!!!