Automatic transmission problems

Tiny
SMILEY9804
  • MEMBER
  • 2002 FORD EXPLORER
  • 4.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 159,583 MILES
Was at a stop sign and lost all forward gears any ideas what that could be? I have the transmission out and the vent hose on top has a hole in it could that be the reason it has no forward gears? It drives in reverse and before this happened there was no signs of any problems.
Thursday, August 31st, 2017 AT 7:37 PM

3 Replies

Tiny
STEVE W.
  • MECHANIC
  • 15,238 POSTS
Hole in a vent line won't make a difference, it's a vent that should be open anyway.

Would it still move if you shifted it manually or did you only test it in drive?
It could be a simple solenoid replacement or bad electrical connection. Or it could be mechanical failure internally. If the trans is already out it won't be possible to do any diagnostics as you need the PCM in the vehicle to connect to the electronics while the engine runs and you test the operation using a scan tool.
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Friday, September 1st, 2017 AT 10:58 PM
Tiny
SMILEY9804
  • MEMBER
  • 2 POSTS
When it was in it would only move in reverse would not move in any other gear when shifted in forward gears would only shake when pressing gas checked for codes before took it out and it was not giving any codes.
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Saturday, September 2nd, 2017 AT 10:56 AM
Tiny
STEVE W.
  • MECHANIC
  • 15,238 POSTS
Codes wouldn't be visible to anything but a high end scan tool. With it in you can activate the various solenoids and run tests.

But as it didn't do anything I would suspect the forward clutch. But it's a gamble.
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Saturday, September 2nd, 2017 AT 6:11 PM

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