Honda Odyssey when driving rpm goes up but the car does not move any faster. if you turn off the engine and turn it back on it drives fine for a while and then the rpm goes up again and the car seems to feel like it's not shifting gears. this is an automatic and the trans fluid is good as is the oil. no engine lights are one.

All engines move back and forth. Sometimes too much:)

Check your motor and trans mounts to see if they are allowing the engine to move too much. You need 2 people to do this: One person on the side of the vehicle with the hood open and another in the vehicle, E Brake applied!!!, carefully shifting from Drive to Reverse. Watch the motor & mounts for movement. If you see much movement, you probably have a weak wiring connection that disconnects when the engine is in a certain position. A short or grounded wire could also be the problem so make sure no wires are bare in certain spots from rubbing as the engine moves.

Check the wiring harness by moving the wires by hand while idling your car. In PARK with the E-brake applied!!! Move the wiring and hoses around, shake them and see if you can replicate the problem in your driveway.

Good luck.

I think you need a new transmission.

When cranking you fell the engine turn faster then normal. it could be your timing belt that's broken.

double posted. why ask that?
post the full symptoms, and not just hesitates.
tell the full story,, Driveablity is complex. and a single line
is useless to helpers.
tell a story like this
my car, only COLD
i move the A/T shifter to D. and there is a delay before car moves.
or i can feel it go in to drive but the engine lacks power to move fast.
or the tranny shifts to Drive. but the tranny flares. RPM goes way too high?
or tranny slips (RPM) only cold or hot.
just a clue as to what is going on , in details.
the more details? , answers get better 100 fold.

P1259 HONDA - VTEC System Malfunction
Possible causes- Low engine oil pressure or level
- Open or short circuit condition
- Faulty VTEC oil pressure switch
- Faulty VTEC solenoid
When is the code detected?The P1259 is set when there is a problem in the VTEC Oil Pressure Switch circuit or VTEC Solenoid Valve circuit

Check for a clogged or pinched feed line or return line between the pump and the rack valve body.

Your transmission is probably jumping in and out of "torque converter lockup". The lockup is the most efficient mode because 100% of the power from the engine goes to the wheels and is not lost in the torque converter. It only goes into lockup at higher speeds, but will jump out if the computer senses it needs more power (at the higher engine RPMs) to maintain or increase your speed. I recommend either going faster or slower if this is bothering you. :-)

Can you tell where the transmission fluid is coming from?

Does your van have the V-Tec engine? If it does, you will have to take it to a dealer to get it fixed. What is happening is one or more of the solenoids under the valve cover is malfunctioning. The result is the surge in rpm's and the rough transition. You could try an indy mechanic but any mech worth his salt will tell you to take it to the dealer.

Maybe the solution
There is a recall on the ignition switch,
My 99 Ody with 120K would suddenly switch off and come back while runing, Take it to dealer and report to Honda, Since out of warranty. The dealer would do the repairs estimated at $100 charge to you.