Drivetrain - No 3rd or 4th gears! | Page 2 | Ford Escort Owners Association (FEOA)
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Drivetrain No 3rd or 4th gears!

Discussion in 'Drivetrains' started by zzyzzx, May 22, 2020.

  1. zzyzzx

    zzyzzx FEOA Member

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    This is what the used transmission fluid looked like:
    [​IMG]

    It didn't smell or anything. I've changed worse transmission fluid and had the transmission still work (not on this car, but anther car that uses a Jatco 4EAT style transmission).
  2. marclar

    marclar Administrator Staff Member

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    any idea how long that filter was in the trans?
  3. zzyzzx

    zzyzzx FEOA Member

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    I'll have to check, my guess is around 100K miles. I know I've only replaced the filter once.
  4. marclar

    marclar Administrator Staff Member

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    id say thats definitely a bit of metal.. but if its that many miles, its not THAT bad. fluid doesnt look that bad either. wondering if your having valve body issues.
  5. zzyzzx

    zzyzzx FEOA Member

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    I am not sure how to test for that. other than no codes and what I can do with the pan off which wasn't much. I'm taking the approach of just fixing the obvious first.
  6. zzyzzx

    zzyzzx FEOA Member

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    If just replacing the fluid and filter doesn't fix the problem, the next step is to get a gaugeset and see what ports I can connect it to, to check for the appropriate pressures at the various ports. Presumably that would make any pump or valve body issues appeareant.
  7. zzyzzx

    zzyzzx FEOA Member

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    So am I. I could easily see it being one of the tiny filters or checkballs (if they are not metal) being a problem. Not many YouTube videos on this type of thing. Will update after testing with it just being a fluid and filter change.
  8. zzyzzx

    zzyzzx FEOA Member

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    Finally took it out for a test drive after just changing the filter and replacing the fluid....
    It works less bad. The difference being that at least now it will go into third if I rev it high enough, and by high not really all that much. The fluid was at least a little low when I was doing this, so that might have been a factor. This was the first time I had driven the car since May.
  9. zzyzzx

    zzyzzx FEOA Member

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    Small Update:
    Now with a full bottle of Lucas and a slight increase in line pressure, no difference. It goes into third with a lot of slippage and no 4th. It's as if it's not even trying to go into 4th.
    No idea at this point.
  10. denisond3

    denisond3 Moderator Staff Member

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    This might be a problem with the neutral-safety-switch on the top of the transmission. Its function also include the range senor, telling your trans control module to use 4th. That neutral safety switch is really just a multipole multithrow mechanical switch.
    Taking care of the neutral-safety-switch is the reason I dont wash that side of the engine/trans at all.
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  11. zzyzzx

    zzyzzx FEOA Member

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    Just tested that, and the switch is working properly. I used the 12 pin connector on top of the transmission to get to that. Would have been easier to do, but I could not figure out how to remove that connector pair from the top of the transmission, so I had to remove the air box and probe to connector sideways. Also the resistance of all 4 solenoids is around 17ohms, and they all drew current when I tested them.

    Using your reasoning, I should check the TPS next, since that can cause funny shifting as well. So that is next. I don't think that the Turbine Speed Sensor is an issue either. I've driven a vehicle with a bad one and this isn't it (plus that would give me code).
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  12. denisond3

    denisond3 Moderator Staff Member

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    I figured out how to disconnect the 12 pin connection on top of the transmission after having gotten 4 or 5 apart by breaking things! It still is not easy.
  13. zzyzzx

    zzyzzx FEOA Member

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    How does one get it out of whatever is holding it in without breaking it?
  14. denisond3

    denisond3 Moderator Staff Member

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    I use a thin screwdriver to hold the clip in its 'disengaged' position, while wiggling the halves of the connection apart. Like it said, I would not consider it easy. Also, in case I break off one of the locking clips - I just shove the connection back together and hope it stays. Done a couple like that in fact.
  15. zzyzzx

    zzyzzx FEOA Member

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    No auto parts store loaner tools to test the transmission oil pressure. But if you look on eBay long enough, you can get ones with 5' hoses cheap enough.
  16. zzyzzx

    zzyzzx FEOA Member

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    I got my transmission pressure gauge today. Didn't open the box, since the box says that the hose is only 24", where as the eBay ad specifically stated that it had a 60" hose! eBay strikes again! Third time so far this year! I will be returning it.
  17. denisond3

    denisond3 Moderator Staff Member

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    I have you measured it? I think mine had a 60" hose.
  18. zzyzzx

    zzyzzx FEOA Member

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    I'm relying on the text of the outside of the box, which clearly states 24":
    [​IMG]

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