Chrysler Repair: Chrysler transmission codes 36, 53, 54, hydraulic pressures, grand voyager

Question
hi Roland , i got these codes regarding my tran prblm 53  54  36
your help is always appreciated . also whats the difrnc between voyager and grand voyager is it just longer chasies or also parts .
thanking u again

Answer
Hi Musa,
I would have to conclude that there is excessive slipping of the clutches internal to the transmission. The 53 and 54 say that the ratio of rpm of the input and output sensors is not valid for the 3 and 4 gear operation and the 36 say it is detected immediately and therefor is not electrical in nature and therefor the only causes would be mechanical or hydraulic. If it is not low transmission fluid level or low hydaulic fluid pressures (due to a defective internal pump, then a rebuild of the clutches, etc is necessary. So check the fluid level and it would be prudent to check the hydraulic pressures by means of the several check ports using a pressure gauge. It is is the pump that would be less expensive a repair, so do check that out.
On the model question, may I suggest that you check at Allpar.com which is a reliable and extensive site for features of the various models.
Best of luck.
Roland