Top 20 2003 Ford Mustang Questions & Answers

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P1125 FORD Code - Throttle Position Sensor Intermittent

https://www.engine-codes.com > p1125_ford Faulty Throttle Position Sensor · Throttle Position Sensor harness is open or shorted · Throttle Position Sensor circuit poor electrical connection. Missing: Error ‎P1120

• P1120 FORD Code - Throttle Position Sensor Out of Range

  https://www.engine-codes.com > p1120_ford Malfunction is detected when voltage from the sensor is sent to Engine Control Module (ECM) is out of range. 'What are P1120 FORD code possible symptoms? Engine ...

https://www.google.com/search?q=2003+Mustang+GT+DTC+Error+Code+P1125+and+P1120 ..

evaporative emission system ? https://www.youtube.com/watch?v=g4ClmBASUco https://www.youtube.com/watch?v=Dfj-F_pTj5M&t=8s

Try this website for help. www.crutchfield.com

check for fuel availability.

I'd start by having the tires balanced and remounted. Rotating them wouldn't hurt either. Start there.

The fuel pump shut-off

switch is located on the

left side of the trunk

between the left rear tail

light and the trunk liner,

and to the left of the

hole in the trunk liner

To reset the switch:

1. Turn the ignition OFF.

2. Check the fuel system for leaks.

3. If no leaks are apparent, reset the switch by

pushing in on the reset button.

4. Turn the ignition ON.

5. Wait a few seconds and return the key to OFF. 6. Make another check of leaks

80-90 ft/lbs torque . On aluminum wheels check torque after 200 miles . Then again until they do not tighten.

The idle is completely computer controlled, it is not adjustable.

There are two possibilities...

1. The crankshaft and camshaft sensors are not properly synchronized to each other. This is a procedure that must be performed with special tools.
2. A bad alternator diode can cause this code to set due to voltage ripple. Have the alternator/charging system tested.

Sensors do not need to be recalibrated , the ecm should have the codes cleared . Then turn the ignition system on with data reader hooked up to see if sensors repaired the fault code.

position sensors have little to do with rough running engine items like bad injectors, problem ignition control module, fuel pressure , HT leads valves, vacuum leaks all contribute to rough running best run the fault codes first to determine what area to look at and fix the reported faults

Hi Janet: Fast answer........ Yes. Depending on how wild you want to go??????? Madman McKay car stereo or any other local specialty shop, to DIY with whatever you've got available. Cheerfuls.

Do a Web search under the terms (Your make, model, year vehicle) intake manifold runner. Or intake runner control solenoids, rods, etc. You may find Youtube videos. The runners are sandwiched under or inside the intake manifold. Some had plastic clips which crumbled and the operating rods became disconnected. Some runners stuck too bad for the rods to move them.

Did you check for spark ? Are the fuel injectors firing ? Does the check engine light come on when you turn the key to the on position , an then go out when you crank the engine over ? No Start Diagnostic Basics EricTheCarGuy

The flashing service engine light blinking indicates a Catalytic converter damaging event is happening , a misfire ! Don't driver it like that ,you don't want to have to buy a catalytic converter ! They can cost as much as 1,000 dollars . Flashing Check Engine Light CarMD

try tapping the wiper motor, with it turned on, with a hammer if it starts the motor is worn and needs replacing. you can try attaching a separate ground wire to the wiper motor if it runs then the motor has lost its ground and you can run it this way.

Code 171 is system to lean "1" code 174 system to lean "2" code 420 catalyst system efficiency below code 530 a/c refrigerant pressure sensor "A" sounds like o2 sensors are bad or vacuum leak

The fuel pump relay is located it what ford calls a CCRM - Constant Control Relay Module , It is under the hood in the engine compartment ! An looks like this !

You may have a bad wire or it could be in your wiper switch on your steering column. Have you tested to see if you are getting power at the motor?

Hi Ben if you are looking from the front of your vehicle and is an inline engine number one piston is the first on the left hand side, if you have a front wheel drive, number one piston is top left as shown in picture...hope this helped