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  1. Mark Kovalsky

    2005 6.0 Excursion 4x4 Torqshift Output Case Cracked

    The tow/haul button cannot cause these codes. P0720 and P0722 tell me that either the output sensor is damaged or the wires to the sensor are damaged, or he forgot to plug them in. The other two codes indicate the same thing with the transfer case sensors. P0700 just says that the PCM...
  2. Mark Kovalsky

    2005 6.0 Excursion 4x4 Torqshift Output Case Cracked

    It is a common issue when you have an incompetent shop. No, it doesn't need to be programmed. It needs the codes to be read and the issue that it has fixed before it causes damage, such as destroying the transmission. I suggest you read the codes while you are there and leave the truck with...
  3. Mark Kovalsky

    2005 6.0 Excursion 4x4 Torqshift Output Case Cracked

    That doesn't help me determine which part was loose, but it does pretty well confirm that SOMETHING was loose and caused this failure.
  4. Mark Kovalsky

    Converter slip

    If you had data you could see which sensor (if any) is preventing lock. It could be the tunes preventing lock. No, I do not do any aftermarket tuning.
  5. Mark Kovalsky

    Converter slip

    I was one of the people that did the programming to operate the 5R110W. Since this converter is locking with the switch but not without the switch, the problem is either the tuning or a sensor that is sending bad data. If it is a sensor there should be one or more codes that will tell which...
  6. Mark Kovalsky

    Converter slip

    The light flashed because the PCM can detect that the circuit is grounded when it doesn't want it to be grounded. Do I understand this? With the switch on it does what you want, right? If so, the problem is your tuning. It just isn't asking for lock when you want it to be locked.
  7. Mark Kovalsky

    Converter slip

    You can monitor the circuit and see if the PCM grounds it when the converter should lock. I think a better way to check is with Forscan to see if the PCM is commanding the lock or not.
  8. Mark Kovalsky

    Converter slip

    That's the most likely place to have a problem. You need to electrically check the circuit, don't just look at it and call it good.
  9. Mark Kovalsky

    Converter slip

    If the converter is locked you shouldn't see more than 10-15 RPM slip. 540 RPM is an unlocked converter.
  10. Mark Kovalsky

    Help with converter slipping

    It is one of those two. I don't know how to tell which one it is without taking the trans apart. It could be a seal on the input shaft was damaged when installing the converter. I've seen that happen several times. It could be a problem inside the converter.
  11. Mark Kovalsky

    6.0 to 7.3 swap? Or axle swap?

    The ZF that is bolted to the 6.0L won't bolt to a 7.3L.
  12. Mark Kovalsky

    4r100 help

    I know Dieselsite builds a good one. I don't know if their prices break your bank or not.
  13. Mark Kovalsky

    4r100 help

    Two thoughts. One, the caps lock is stuck on your keyboard. Second, the transmission has mechanical problems. It needs to come out and be rebuilt. It could very well be the center support.
  14. Mark Kovalsky

    4r100 help

    How delayed is it? What gears are delayed? Forward? Reverse?
  15. Mark Kovalsky

    Trans tune question

    If you raise the pressure too much on the wrong shift you'll break hard parts, not make the trans more reliable. No, it was designed to be reliable without having harsh shifts.
  16. Mark Kovalsky

    6.0 trans problems?

    When the trans is cold the torque converter won't lock. Once it warms up the torque converter locks and now the shaking from the engine misfire reaches you. Fix the engine problem and the trans will be fine.
  17. Mark Kovalsky

    4r100 PTO Transmission Rebuild Question

    You do not need a PTO specific rebuild kit. I'd be very surprised if anyone made a PTO specific rebuild kit. The only difference would be the label on the package.
  18. Mark Kovalsky

    Coast clutch locked in built 4R100’s?

    It was built by the transmission prototype shop at Ford Motor Company, Automatic Transmission Engineering Office. That's where I worked. We built transmissions for a Baja race team. We won the Baja 1000, the Baja 2000, and many other SCORE off road races.
  19. Mark Kovalsky

    Frustrated with Transmission rebuild , Help

    The pressures look good. The converter can't cause soft shifts. Does it have a tune? That can cause soft shifts.
  20. Mark Kovalsky

    Coast clutch locked in built 4R100’s?

    I have only seen this done on a full race trans that was not a street legal vehicle.

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