My Honda cr250 wont shift from second to third. I pull up on the shifter and it wont let me. it goes into first second and neutral just fine?????

With the motorcycle in neutral pull in the clutch and push the shift lever down, it will go into first gear. To shift into 2nd gear, pull in the clutch and lift up on the shifter pedal and it will go into 2nd gear. Repeat the second step for third, forth and fifth gears.

It should only start in park or neutral sounds lovely like transmission is it an automatic?

Most likely a bent shift fork.

Shifting to neutral is a bit tricky until you get the hang of it. From first gear, shift only halfway. From second downshift only halfway. Don't do a full pull on the shifter just lightly. It takes some finesse and practice, but you will get it in no time.

My friend, it definitely NOT a synchronizer. Those are on the tranny shafts are brass with same teeth as the gear they're on, and are sloped to slow each gear to a stop when shifting into each gear, so rule that out. Think about it, if its stuck in 3rd, but you can still move the shifter to the other positions, then most likely it is only the shift fork on 3rd gear has somehow slipped out of its connection to the shifter rail or it's the connection is broken off. Since the shifter is on top of the trans, you can remove the console and covers to see if the shifter and cover is removable without pulling the trans to see what has gone wrong. Otherwise, you will have to pull the trans to fix that situation. Don't sweat it my friend, it could be something simple. Best of luck with the DIY friend, and may your new arrival be what you wanted. A healthy new baby.

I would pull the trans out, break it down all the way, wash all parts and reassemble it correctly, with new synchro rings etc,checking forks for wear etc as you said. Now that's just me. I don't know if you have those skills,but that is the way to go.

Most likely your shift cable (from the selector to the transmission) is worn, maybe needs lubrication. Mine had a similiar problem, but had to shift it into neutral and back up to get it in reverse. A new shift cable solved the problem.

the neutral safty switch tells the comp. what gear is in. when its not working the light wont move and the car will not go threw the gears prop. the switch is nown to go out. it is located on the tranny or down under the shifter

Did you adjust the shift rods from the shifter to the trans shift arms. Take your shift rods loose and put shifter in neutral, and transmission arms in neutral, then adjust the rods so they slide in. Then your shifter matches your transmission and you should be able to shift just fine.