An automatic transmission might be slow shifting from first to second because of low Transmission Fluid. You might also have damaged the gears in the transmission at the area between first and second.
Difference between first shifting and second shifting theorem
Make sure parking brake is fully released Transmission fluid and filter may need changing If it has a manual transmission, try giving it a little gas as you release the clutch into 2nd.
They are the reccomended shifting points for a manual transmission. When you reach 'I', shift out of first, to second, and so on.
My 1984 corvette transmission is not shifting into overdrive. It shifts first thru third fine.
The shift link cable could be broken, or the 1st/2nd shift fork, inside the transmission, could be damaged.
A hard shift from first gear to second gear in the Honda Accord could be because of a linkage problem with the transmission. It could also be a problem with the transmission screen needing to be cleaned or low transmission fluid.
The first cause of the jump out from one to other gear is the loose shifter fork, which connects the shifting linkage and gears of the transmission. The second cause is loose shifting linkage itself, which connects the gear shifting knob and shifting fork. The shifting linkage and shifting fork become loose due to the rapid changing of gears from one gear to other at high speed of vehicle. The third cause is the misalignment of shifting linkage to the shifting fork.
Be sure the vacuum supply line from the engine to the transmission vacuum modulator is not disconnected.
Bad syncro in the transmission, mainly bad transmission. Hard shifting can cause the problem. Transmission can be rebuild or syncro replaced possibly might be cheaper just to get a new one from the junk yard. dont race a stock transmission on a 92 eclipse.
A bad transmission gear can cause your 1999 Nissan frontier to shift hard. Low transmission fluid can also cause the transmission to shift hard.
It is probably low on transmission fluid. Check transmission fluid level only with a warm engine after it has been run about 5 miles or so. Checking this when the engine is cool will give false readings.
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.