F5A51 Archives - Transmission Digest
Hyundai/KIA A5HF1 (F5A51) Binds in Reverse, No 4th Gear

Complaint: After overhaul, a Hyundai or Kia equipped with the A5HF1 (F5A-51) transmission binds up in reverse range and does not have fourth gear. Cause: The Failsafe Valve “B” keeper fell out of the valve body unnoticed, refer to figure 1. That will allow the valve and sleeve to move out far enough to create

Great Customer Service: The Dream and the Reality

We recently got a call on our tech line from a customer who had bought an F5A51 unit for a 2003 Kia Sedona. Their sole concerns were delayed engagements and sluggish shifting when hot. The vehicle was in a remote location several hundred miles away. After going through our trouble tree, we determined that this customer had an internal transmission issue.