Discussion:
Toyota 42-6FGU25 Transmission pump pressure

Have a unit that when cold, will travel fine. Once fluid gets hot, barely moves. What is the M and C port pressure readings. Also could this be the torque converter. I recently change trans fluid and spin off filter, could this have anything to do with this? Thanks in advance!!
  • Posted 1 Dec 2012 02:06
  • By 1sharpdog
  • joined 20 Apr'12 - 220 messages
  • Texas, United States
David Sharp
Have a Great day and thanks for all the great advice! sharpforklift@gmail.com
Showing items 1 - 2 of 2 results.
Kevin, thank you so much for your help. Isolated cause to micro filter clogged.
  • Posted 1 Dec 2012 04:06
  • By 1sharpdog
  • joined 20 Apr'12 - 220 messages
  • Texas, United States
David Sharp
Have a Great day and thanks for all the great advice! sharpforklift@gmail.com
This have a one speed or two speed transmission? What fluid did you fill Trans with,it calls for dexron II.

1speed Trans:

M is Main PSI should be28-64 PSI at idle and 135-128 at 2000 RPM
C is Clutch PSI Should be 28-64 at idle and 128-178 at 2000 RPM,should also drop to zero when inching pedal is pressed

Torque Converter is also a 1/8 NPT close to the M port,it should be 30-90 PSI at 2000 RPM

2 Speed Trans:

M 71-142 at idle. 135-199 at 2000 RPM
C 64-121 at idle. 135-199 at 2000 RPM and drop when inching pedal pressed

Torque converter 30-90 at 2000 RPM
  • Posted 1 Dec 2012 02:42
  • By kevin_t
  • joined 2 Dec'10 - 1,301 messages
  • Pennsylvania, United States

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