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Cruise Control Problem on '03 Sport Trac

Discussion in '2001-2005 Explorer Sport Trac' started by dpj1j, April 18, 2006.

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    1. mneccspv

      mneccspv New Member

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      City, State:
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      04 sport trac
      callin all experts please

      I am still unable to get the cruise to work after replacing the control module and wires/ switches. I have been unable to locate a relay is there one for the cruise? also can anyone help figure out why the cruise does not work on my 04, pleaseeeeeeeeeeee
       
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    3. ncranchero

      ncranchero Co-moderator Staff Member Moderator Elite Explorer

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      I'm no expert by any stretch of the imagination but I'll try and help you. Exactly what have you replaced? Are your brake lights operating properly?

      Principles of Operation

      The speed control system is designed to maintain a selected vehicle speed between 48 and 200 km/h (30 and 125 mph).

      Whenever the system is engaged and active, a speed control set indicator will be illuminated in the instrument cluster.

      The brake pedal position (BPP) switch is normally closed to ground. When the brake pedal is applied with the speed control system engaged, the BPP switch closes to battery voltage, putting the speed control in stand-by mode.

      NOTE: The speed control module is integral to the speed control servo.

      Normally, when the brake pedal is pressed, the speed control module deactivates the speed control system. Under increased brake pedal effort, the deactivator switch, a normally closed switch, will open and remove power to the speed control servo clutch, releasing the throttle independently of the speed control module.

      The clockspring provides the electrical interface between the steering column wiring and the speed control switches in the steering wheel.

      The inputs to the speed control servo are the:

      vehicle speed signal
      speed control switches
      brake pedal position (BPP) switch
      deactivator switch
      The outputs of the speed control servo are the:

      speed control indicator
      speed control cable controlled throttle position

      Inspection and Verification

      NOTE: If any concerns are noted with the speedometer, stoplamps, or horn, address those concerns by referring to the appropriate sections before continuing speed control diagnosis.

      Verify the customer concern.
      NOTE: Any aftermarket modifications, including but not limited to those listed below, may cause the speed control to not operate correctly:

      Any wiring or lamp modifications affecting the brake lamp operation
      LED brake lamps
      Non-factory installed trailer wiring
      Radios (speed sensitive, auto mute)
      Remote starters and alarms
      Lighting and electrical accessory modifications

      Visually inspect for obvious signs of mechanical or electrical damage:
      Visually inspect the speed control actuator and accelerator controls.
      Visually inspect the speed control cable without removing it and ensure smooth cable operation. Inspect the speed control cable connection to the throttle body.
      Visually inspect the accelerator cable without removing it and ensure smooth cable operation. Inspect the accelerator cable connection to the throttle body. Also check for cable interference with the carpet, bulkhead grommet, insulation and instrument panel wiring.
       
      Last edited: November 26, 2009
    4. mneccspv

      mneccspv New Member

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      04 sport trac
      One day I was driving with the cruise activated and for some the cruise turned itself off on it's own. It would not recactivate. driving that night I noticed that the lights on the switches were not working either. Assuming that the switch went bad I replaced it. The light in the switch now works but the crruise sill not. The dash indicator flashes for a mili second on off and nothing else. The horn works fine and all dash lights, brake lights, turn signals, wipers, wiper washer, ect work fine. the only thing nor working is the cruise. So i went a step further and since i got one dirt cheap i replaced the servo unit under the hood. cruise still not working.

      after reading other threads I am now wonder if it is posible that the clock spring has gone bad for this one thing? I really appreciate any help you can offer since i am really at a loss.
       
    5. JSingleton

      JSingleton New Member

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      Year, Model & Trim Level:
      2003 Sport Trac XLT
      have you figured it out yet we have the exact same problem
       
    6. mneccspv

      mneccspv New Member

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      Nope, still have not figured it out and cant affford to take it to a shop. ughhhhh
       
    7. sakirfp

      sakirfp Active Member

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      City, State:
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      Year, Model & Trim Level:
      05 XLT 4.6
      My 04 ST XLT is having CC problems also..but I have noticed during this cold chill we are having my CC is working fine..I do not know why it works with it is cold outside
       
    8. michail1

      michail1 New Member

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      Cruise Control FIXED!!!

      I had the same problem. After reading about many different things people have tried and expenses, I decided to bring it in under the $100 warranty deductable.

      They fixed it in a day for what they lead me to believe was common enough problem that they had the parts.

      Talked to tech. Turns out they they replace a brake switch in AT the Master Cylinder. From posts, I thought the brake switch at the pedal would be bad, but it was a switch at the Master Cylinder. Since it was warranty, I don't know how much of it was fake on the report, but they show they had to drain brake fluid, replace switch, then added fluid back.

      Problem solved. Been working since like a new car. $100 for a switch - damn. Oh well, works now.

      PS. Also had a remote start installed which uses the factory remote. LOVE IT.

      Michail
      michail.com - primarymeds.com
       
    9. ncranchero

      ncranchero Co-moderator Staff Member Moderator Elite Explorer

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      Just make sure they give you the black switch if you buy one, and NOT the red one.
       
    10. michail1

      michail1 New Member

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      What switch?
       
    11. wbrown48

      wbrown48 New Member

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      Still having that problem????

      :feedback:
      Have you found an answer to your poblem on the curise control. Mine has been intermediate, but seems to be consant now.
       
    12. 03OhioSportTrac

      03OhioSportTrac Member

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      A while back mine stopped working too...When I click it on it lights up on the dash but it just doesn't work...:thumbdwn:
       
    13. ncranchero

      ncranchero Co-moderator Staff Member Moderator Elite Explorer

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      The switch on the master cylinder is usually the culprit. Have the dealer run an OASIS to see if your truck needs the recall prior to purchasing the switch yourself. As stated above, make sure you get the black switch. (sorry michail1, didn't see your last post)
      [​IMG]
       
    14. michail1

      michail1 New Member

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      Cruise control fixed.

      Sorry, forgot to respond.

      Since mine was in warranty ($100 deductible), I decided to bring it in. Just in case it was more than just a possible switch (and they provided a rental car for the day).

      I am confirming it was the switch on the brake master cyclinder.
      They replaced it with a Black plastic one. Obvious it is new.

      Yes, my problem was intermittant at first, and then became a full time problem over several months.

      Problem has been fixed since I brought it in several months ago.
       
    15. deltadon

      deltadon New Member

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      2003 Sport Trac 2/wd. Cruise doesn't work at all, also horn doesn't work???

      Don
       
    16. michail1

      michail1 New Member

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      Cruise

      Sounds like you have a power issue.
      Check the fuses?
       
    17. burrcor

      burrcor New Member

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      Remote start added - now no cruise

      --------------------

      The other day I had a Ford remote start added to my '05 Limited (which I've had since new with 45k on it) The guy who did the job is an authorized Ford installer. When I went to use the cruise today, it did not work at all, no lights, no nothing. I called him & he explained the installation process and stated that he had nothing to do with the cruise. He also said to check the fuse so I read the book and checked the net only to learn (I think) that there is no fuse for just the cruise. I tried looking for info here but can't tie the two together.

      It does seem that the installer guy had to be around the brake electrics and steering column for the remote start install

      Has anyone had this done and had the same problem?
      Or what to check first?

      Thanks
       
    18. michail1

      michail1 New Member

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      I have the remote start as well. Agreed, it has nothing to do with the cruise control part.

      My vehicle is COMPLETELY stock (except the remote start).

      The switch that goes bad is in the brake master cylinder. (Not the brake switch as the brake pedal). It was mentioned that the switch puts the crusie in standby, but if the switch is broken, the cruise nevers turns on in order to go into standby. When the switch goes bad, it is normally intermittant. So, the cruise light will go on and instantly off with each press of the cruise button. If you are board, you can drive down the street constantly hitting the button and it may eventually go on (which is my experience). Eventually, it will never go on.

      When I called Ford, the guy knew instantly what the problem was when I told him what happened. It was so obvious that it seemed like he was telling me you turn on a light when you walk into a dark room if you want to see. :)
       
    19. burrcor

      burrcor New Member

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      any other symptoms?

      Thanks for the reply

      Just seems really odd that the cruise stopped working just after the remote start was installed

      If this switch on the master cylinder is bad, wouldn't there be other symptoms? maybe a fault code?

      Also
      since a very light touch of the brake pedal will disengage the cruise it would might seem that pressure at the master cyl. would need increased pressure from the pedal.

      Though, if I'm understanding this right, the only real disconnect is at the master cyl. sw. with there being NO electrical interface at the brake pedal itself?


      Lastly
      If, while going down the road, and I keep trying to activate the cruise with there being no cruise light being illuminated (even briefly) what might that mean

      PS
      how would test the master cylinder switch?

      Thanks
       
    20. burrcor

      burrcor New Member

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      Brake pedal position sw.

      I saw that the brake pedal position sw. is interfaced with the cruise

      Could the remote start install have moved it off kilter?

      again
      thanks for any help on this
       
    21. michail1

      michail1 New Member

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      Temporary --
      My problem started as intermitted. I could press the cruise on button many times with the indicator briefly lighting. It would eventually turn on and work if I kept pressing the button. I put up with it for some time, because it wasn't worth bringing in for repair and dealing with a rental car, etc.

      Broke --
      Finally, it stopped working all together. Pressing button didn't even briefly light it.

      Since it was in warranty, I didn't care what it took to repair it when I did bring it in. The day I got the truck back, I went to get an oil change and popped the hood. From the dust/dirt, I could tell that the switch (pressure/position - whatever) on the brake master cylinder was new and dirt wiped away from the area. Since the repair paperwork shows only the switch, and it was told to me before hand, and the appearance of the new switch, I tend to believe it was what caused the problem. I am sure if more was replaced, they definately would have said or put it in the paperwork to be paid by Ford.

      The brake switch at the pedal (linkage) is for the rear brake lights.
       
    22. burrcor

      burrcor New Member

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      ncranchero posted that the remote start is tied into cruise

      is the master cylinder sw. an N/O or N/C switch?
       
    23. michail1

      michail1 New Member

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      To install a remote start, you don't even need to pop the hood (other than maybe to disconnect the battery). So, the switch should have nothing to do with remote start. Remote start is tied to the brake switch at the pedal.

      The brake master switch is NC (normally closed).

      I just happened to find a link that explains the switch, etc. Even tells you that it is about $25.

      http://www.antony-anderson.com/Cruise/Cruise_Deactivation_Switch.html
       
    24. morinjo

      morinjo New Member

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      Cruise control problem

      When I try to engage the cruise control in my 2005 Sportstrak the indicator light in the dashboard will just flicker for a second and the crusie control will not engage. Was able to fix by replacing the sensor switch located in the front end of the brakes master cylinder. I purchase the sensor at the local Ford dealer for $29 and the CC is back to normal.
       
    25. michail1

      michail1 New Member

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      So, you're another person confirming the fix as stated. :)

      Since you purchased the part directly, would you please post the Ford part number. It would make it easy for those in the future seeing the post.
       
    26. morinjo

      morinjo New Member

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      Switch for Explorer Sportstrak with Cruise Control problem

      Michail:

      The Motorcraft part number is 3L3Z9F924AB. The nomenclature is SWITCH ASSY

      Happy New Year.
       

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