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  1. Mark Kovalsky

    IDI trans swap

    Swap the converter and the solenoids and everything should work fine.
  2. Mark Kovalsky

    OBS bogs down in reverse

    It is almost certainly the converter partially locking causing the engine to bog. The converter will partially lock if the pressure to the converter drops. The pressure can drop for several reasons. Low trans fluid, improperly installed internal filter, leaking seals on the input shaft, or a...
  3. Mark Kovalsky

    4r100 Starting in 3rd gear

    I think so, but I am not really familiar with how the harness plugs together.
  4. Mark Kovalsky

    4r100 Starting in 3rd gear

    No, it cannot. You have a wiring harness problem. It could also be in the ground side of the harness, not just the power side.
  5. Mark Kovalsky

    Tranny limp mode

    So the converter failed, and then repaired itself? I don't think so. This sounds more like an electronics problem. It could be a fault in the tune, or maybe a wiring issue.
  6. Mark Kovalsky

    Tranny, Electrical?

    Or park. It doesn't matter which one.
  7. Mark Kovalsky

    Tranny, Electrical?

    Get a 0-350 PSI gauge and install it in the test port. Get pressure readings at idle in P, R, N, D, 2, and 1. Also get pressures at stall in R, D, 2, and 1.
  8. Mark Kovalsky

    Tranny, Electrical?

    Check the trans fluid level. Low fluid can do this. Check it with the trans warmed up, in park, and the engine idling.
  9. Mark Kovalsky

    Tranny, Electrical?

    It is obvious. It ran great without the chip and has problems with the chip. The problem is the chip.
  10. Mark Kovalsky

    Trans Temps

    Get Forscan so that you can see what the temp sensor is reporting. The gauge will stay in the middle until the temp gets to around 260°F. You can download Forscan free at www.forscan.org. Their webpage shows how to select an adapter to plug into the OBDII port. I bought mine from Amazon for...
  11. Mark Kovalsky

    2003 6.0 swapped to 7.3

    It flashes because codes have been stored. Get Forscan and read the codes, then you'll know why it's flashing. And you may even be able to fix it.
  12. Mark Kovalsky

    Tq slip

    Yes, that is how it is supposed to work.
  13. Mark Kovalsky

    Rebuilt my 4R!

    That is the sprag style one way clutch. It is not the mechanical diode one way clutch.
  14. Mark Kovalsky

    Rebuilt my 4R!

    That tag does have the trans build date. But I don't know how to read it. And that one way clutch looks like a sprag to me, not the mechanical diode.
  15. Mark Kovalsky

    5r110 compared to 5r110w

    I completely disagree with that article. What would make it true is if they changed it to a comparison of a competent shop and an incompetent shop. Not all small shops are incompetent. Not all remanufacturers are competent.
  16. Mark Kovalsky

    Rebuilt my 4R!

    The last mechanical diode was built in the spring of 2001. That's several months before 2002 production started. When was your truck built? The month and year are on the data decal in the driver's door opening. Maybe someone swapped the trans for a 2001 at some point. He is probably the only...
  17. Mark Kovalsky

    5R110W No Pressure any gear

    There is a way to test. Put a pressure gauge in the test port and if you have zero pressure the pump is done.
  18. Mark Kovalsky

    Ford HD4R100 Fluid.

    I used to post not to put MERCON V in a 4R100. It did cause problems. When Ford reformulated MERCON V they should have given it another name.
  19. Mark Kovalsky

    Ford HD4R100 Fluid.

    Ford wouldn't know the correct fluid to use in their transmission, so don't believe the MERCON V tag. Always believe what you read on the internet above the company that makes the product. [/sarcasm] How old are the things you read that said don't use MERCON V? Before 2006 MERCON V didn't play...
  20. Mark Kovalsky

    Built 5r110w reverse issue

    I don't see how it could be a TC issue, whether you mean torque converter, transfer case, or turbocharger. If it is a pump issue the pressures will show it. They do not. But what does the pressure do when the trans loses reverse?

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