Code PO733, vehicle will not Move?

Tiny
GUITARFIEND
  • MEMBER
  • 2000 FORD EXPLORER
  • 4.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 97,000 MILES
Hello, I replaced all shift solenoids and the fluid. The code is PO733 is still active, and the vehicle will not move. Any ideas?
Sunday, May 26th, 2024 AT 2:30 PM

3 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,414 POSTS
PO733 is basically saying that the TCM is seeing a difference between the input speed to the transmission and the expected output speed. In this case it is because you shift it into gear, but the truck doesn't move. It sounds like the internal clutches, or the oil pump have issues. What was it doing prior to replacing the solenoids? The same thing? If yes, then I would put a pressure gauge on it to see if it's the pump or converter causing the problem. If the pressures are correct but no motion then there are internal parts that have failed, with no engagement though it is more likely the pump.
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Sunday, May 26th, 2024 AT 8:04 PM
Tiny
GUITARFIEND
  • MEMBER
  • 2 POSTS
Thanks so much for your help. I had a feeling in was probably gonna be internal and yes, it was doing the same before the solenoids were installed. I will take it to my transmission guy.
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Monday, May 27th, 2024 AT 5:07 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,414 POSTS
In that case it is almost guaranteed to be internal. Solenoids can cause odd shifting or harsh shifts if they are binding or not working but no motion at all is generally an internal issue. See what they say and see if there are any updates they can install if they rebuild yours. Thank you for using 2CarPros.
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Monday, May 27th, 2024 AT 7:02 AM

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