Possibly low fluid.
A bad transmission gear can cause your 1999 Nissan frontier to shift hard. Low transmission fluid can also cause the transmission to shift hard.
Check the transmission fluid on the 1995 Nissan Altima. Bad fluid can cause the transmission to shift harder on parts that are more worn.
i have a 200 f150 p/u if I put my foot into it it will accellerate and shift as it should until 60 mph. at that time it will over rev and I have to slow down and dissengage over drive.
There are a number of conditions that can cause an automatic transmission to slip into protective mode. To prevent damage, if a transmission sensor detects low pressure, slipping or any of a number of conditions, it causes full pressure to go to the shift circuits, making the transmissions shift hard. The only way to determine what's causing the hard shifts is to have a computer diagnostic scan.
More likely it has something to do with pressure problems in your transmission, check the fluid and replace the transmission filter. If the problem is not fixed check the vaccum lines running to the transmission and the vaccum off the engine.
The primary cause of a transmission to experience hard shifting is low fluid. Fluid is the life of a transmission and operates most of its functions.
Has recent work been performed?
you have to put your foot on the break pedal, to shift out of park its a safety feature
fluid braking down
I am presently going through the samething. Try changing the trans fluid and filter, it is most times recommeded after 100,000 miles.
A manual transmission will become noisy, shift hard and eventually self destruct. An automatic will simply not pull the car.
Is it an automatic or manual if it's an automatic you may have a bad u joints and same for manual, as well as synchronizing gears may cause it to be hard to shift. Otherwise i'd say it's your u-joints