Drivetrain - 2002 zx2 won't shift out of 2nd (automatic trans) | Ford Escort Owners Association (FEOA)
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Drivetrain 2002 zx2 won't shift out of 2nd (automatic trans)

Discussion in 'Drivetrains' started by farmall.dude, Jan 17, 2015.

  1. farmall.dude

    farmall.dude FEOA Member

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    I've read several articles and threads but none exactly match the current situation. My son has a 2002 ZX2 that the tranny crapped out in. He replaced it with one from a salvage vehicle. (once he figured out not all transmissions fit!) After he put it in, it seemed to work fine, for about 2 weeks driving back and forth to work. Then, on the way home, it won't shift out of 2nd gear into 3rd. It goes from 1st to 2nd, back to 1st at reasonable RPM/Speeds. Speedometer works fine (speed sensor?) Neither of us know much about transmissions, so reaching out for some help in diagnosing the probable root cause. If it's not something relatively simple/cheap he'll have to return it to the salvage yard for another one (and go through that again). Any help/ideas?? Also, how does he know exactly what transmission he has? He says there are no numbers anywhere that he can find and the sticker is worn off.
  2. zzyzzx

    zzyzzx FEOA Member

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    Check for codes and report those back.
    Is it doing the same thing as the previous transmission?
  3. farmall.dude

    farmall.dude FEOA Member

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    I've read about codes, but have no idea how to get them. The big box auto stores have readers, but they (apparently) don't read the transmission codes.
    No, his last transmission just quit altogether. What are you thinking?
  4. zzyzzx

    zzyzzx FEOA Member

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    A regular OBDII code reader will get transmission codes. On my 1995LX, I have gotten transmission codes, and they don't light the dash light (presumably because a non-emissions code won't make the light come on).

    A bad TPS or VSS can cause your problems. I am wondering exactly what was wrong with the old transmission because sometimes people replace their transmission, only to have the same exact problem because it was the TPS, or something else outside the transmission and they did not do their homework.
  5. farmall.dude

    farmall.dude FEOA Member

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    I'll ask him for more details and get back with you. BTW, Thanks for the quick response!
  6. farmall.dude

    farmall.dude FEOA Member

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    He said it started slipping badly, then nothing. It wouldn't move.

    He took it to a big box auto store and the said the code showed Shift Solenoid B is bad. Thank you guys for your direction. Now we've got a plausible diagnosis! First, he'll see if he can get replacement trans from the salvage yard (50/50 shot but it doesn't hurt to ask). If not, I guess we'll be replacing the solenoid.

    OK, one more question on the transmission... How do we know if it's a 4EAT-F or not? There's 2 solenoids, one for each and not interchangeable?
    Last edited: Jan 19, 2015
  7. zzyzzx

    zzyzzx FEOA Member

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    Why wouldn't you just replace the solenoid (along with a new filter)? Replacing a solenoid is way easier and cheaper than replacing a whole transmission.
  8. farmall.dude

    farmall.dude FEOA Member

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    Well, I found out after writing the last reply that it's actually the C Solenoid. As I understand, and I could be wrong, changing that one is way more complicated. If I'm wrong let me know! But, he got the trans that was supposed to be good. Wouldn't it make more sense (cents) to see if he can get another one and not be bothered with changing the solenoid? If he can't exchange it, then we'll have to resort to replacing the solenoid. Unfortunately, money is a big issue. He can't afford to be putting more money into it if he doesn't have to. Again, I really appreciate the input! It's a big help!
  9. zzyzzx

    zzyzzx FEOA Member

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    Replacing a solenoid should be way cheaper and easier than replacing a whole transmission. Are you saying that you already bought a replacement transmission (used) that you can't return?
  10. farmall.dude

    farmall.dude FEOA Member

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    In the Original Post, I said he has replace his transmission with a one from a salvage vehicle. So Yes and No, I'm saying I'm hoping he can return it for exchange. He paid for a "Good" transmission, he shouldn't have to put more money into it. But, if the salvage yard won't take it back, then we'll have to change the solenoid. It probably is a lot easier to change the solenoid (for someone that knows what they're doing), but he shouldn't have to. Money is way to tight for him to have to spend more on parts. He's got time and ability to swap them and the only cost is aggravation. If plan B comes into play, what is involved in changing Solenoid C (I've seen it labeled 3 or 3-4 in some threads)? It's a ZX2 trans. I see the big box auto store sells the A solenoid in 2 flavors: F-4EAT and NON-F-4EAT. It seems to be the same part number though, so that's a little fuzzy. How do we know if it's a 4EAT or not? I'm assuming it is because it's an Electronic Automatic Transmission, but I don't know what a NON-4EAT (Manual??) would need solenoids for? I don't know enough about it to figure it out on my own. But, I thought I had read somewhere that the Valve Body has to be removed to get to that one. That sounds a little scary to me. I haven't found a good diagram or photo of that particular trans with the pan off, pointing out where the solenoids are. Still looking though...
  11. zzyzzx

    zzyzzx FEOA Member

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    Why should he even have to buy a new solenoid when he now has an entire spare transmission?
    If that's the case, there should be no issue with removing the solenoids from the transmission that they have laying around. They are expensive if bought new! I got my solenoid at a U-pull-it junkyard for $6.50
  12. farmall.dude

    farmall.dude FEOA Member

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    Sorry, apparently you've never heard of a a Core Charge. He had to give them the old trans to get the new one. It's bad enough he has to use a salvage trans to begin with. Using salvage parts to fix a salvage transmission seems like too much of a risk to me (but that will be his choice).
  13. zzyzzx

    zzyzzx FEOA Member

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    If turning in a used transmission for a core charge, it's easy enough to do that with the appropriate solenoids missing from the core. It's not like they will even notice.

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