20 Most Recent 2002 Ford F-150 Questions & Answers

Question edited for clarity. Question moved to sub category. in the link https://www.google.com/search?q=2002+Ford+F-150+4.2,+V6.+Schematic+for+the+cooling+system+hoses+on+lower+intake+manifold&rlz=1C1QJDB_enCA643CA644&sxsrf=APq-WBsN_TkVshGX7zJKaL17s6KNzcJuVQ:1649016127541&source=lnms&tbm=isch&sa=X&ved=2ahUKEwj674rk1_j2AhVQCZ0JHfkABA4Q_AUoAnoECAEQBA&biw=1920&bih=937&dpr=1 ..

U can't , software programmed into the computers . You would need to have computer re manufacturer delete pats an reprogram PCM - IPC - which ever control modules control the anti-theft system . Because if the PCM - engine computer does not see a coded message from the PATS module IPC - instrument cluster etc.. it won't engage the starter an or fuel injectors . It would cost less to have it fixed right by a qualified repair shop. or mobile lock smith .

Many times a bad brake light switch will prevent the cruise from engaging. But your best bet is to get a shop manual and follow the step by step tests. Check with your local library to see if they have online access to a repair manual

Any tune up?fuel filter.

Clean throttle body.

You can't find the problem because you going about all wrong . The service engine soon light an the an the light at the end of your shifter are trying to tell you there are DTC'S - diagnostic trouble codes stored in the electronic modules for the engine an transmission . Your best bet , take it to a qualified repair shop . You don't have the diagnostic tool's or the knowledge to fix these problems , Sorry but you'll only make it worst .

It goes to the intake manifold of the engine.

It is located under the intake in the valley, you must remove the intake manifold to get to it.

Disconnect battery. unplug coils, remove one bolt on top of each coil and pull coil up and out of the way. using a swivel, 3/8" drive ratchet, extension and socket, and proper spark plug socket remove the spark plugs. Make certain to use anti-seize on the threads of the new spark plugs. install new plugs and reinstall coils or replace them if you want. you can carefully unplug and unbolt the PCM from the upper right area of the engine to make it easier to get to the right plugs. If you need further help, reach me via phone at https://www.6ya.com/expert/steven_a67ead41eb5fc62a

If you have already had the tranny serviced... fluid changed & topped up ... You are most likely looking at putting in a rebuild kit... Check out the cost on AMAZON & ROCKAUTO... before you take it to the transmission shop. (It is an ugly, heavy dirty job (requiring skill & more than a couple of SPECIALTY TOOLS)

Which trans does you truck have ? The 4R70W has the following features:

• Wide ratio gears
• Four speeds
• Rear wheel drive
• Automatic
• Electronic shift
• Torque converter clutch control
• Line pressure controls
• Range Selection The transmission has six range positions: P, R, N, (D), 2 and 1.
• The 4R100 features include:
  • four speeds.
  • fully automatic.
  • electronically controlled.
  • Range Selection The transmission has six range positions: P, R, N, (D), 2 and 1.
  Diagnostic Strategy Troubleshooting an electronically controlled automatic transmission is simplified by using the proven method of diagnosis. One of the most important things to remember is that there is a definite procedure to follow. NOTE: Do not take any short cuts or assume that critical checks or adjustments have already been made. Follow the procedures as written to avoid missing critical components or steps. To properly diagnose a concern have the following publications available:
  • Transmission Reference Manual.
  • Powertrain Control/Emissions Diagnosis (PC/ED) manual.
  • TSBs and OASIS Messages.
  • Wiring Diagram.
  These publications provide the information required when diagnosing transmission concerns. Use the Diagnostic Flow Chart as a guide and follow the steps as indicated.

Doesn't have any vacuum hose's , all electronic ! The PCM - the powertrain control module (computer ) controls it . Is the check engine light lit ? 1-2 shift solenoid problem or some internal componet worn !

Look at the motor on the transfer case to see if there is voltage getting to it.. If there is, then the motor is bad.

It should be 42-46 PSI engine off and key on, cycle it a couple of times from off to on.

• 3 flashes - deactivator switch is open or circuit defective.
• • Flash code 3 - deactivator switch circuit failure
  • Central junction box (CJB) fuse 13 (20A).
  • Circuitry.
  • Deactivator switch.
  • Speed control servo.
  • Go To Pinpoint Test H .
  PINPOINT TEST H: FLASH CODE 3 - DEACTIVATOR SWITCH CIRCUIT FAILURE
• CONDITIONS DETAILS/RESULTS/ACTIONS H1 CHECK THE DEACTIVATOR SWITCH CIRCUITRY Speed Control Servo C122 Measure the voltage between the speed control servo C122 pin 9, circuit 307 (BK/YE), harness side and the speed control servo C122 pin 10, circuit 57 (BK), harness side.
  • Is the voltage greater than 10 volts?
  Yes INSTALL a new speed control servo. REFER to Speed Control Servo in this section. REPEAT the self-test. No GO to H2 . H2 CHECK DEACTIVATOR SWITCH POWER Deactivator Switch C1025 Measure the voltage between the deactivator switch C1025, circuit 10 (LG/RD), harness side and ground.
  • Is the voltage greater than 10 volts?
  Yes GO to H3 . No REPAIR the circuit. REPEAT the self-test. H3 CHECK CIRCUIT 307 (BK/YE) FOR AN OPEN Measure the resistance between the speed control servo C122 pin 9, circuit 307 (BK/YE), harness side and the deactivator switch C1025, circuit 307 (BK/YE), harness side.
  • Is the resistance less than 5 ohms?
  Yes INSTALL a new deactivator switch. REFER to Speed Control Deactivator Switch in this section. REPEAT the self-test. No REPAIR the circuit. REPEAT the self-test.