S14 Auto Trans Problems...

[Ceepo]

Car
1995 240sx SE
Auto Trans
ka24de

So i was replacing the water pump on my car today got done and hosed the engine off(clean all the coolant) and now the car has a check engine light, and the trans shifts like shit, i have to pretty much redline it to shift, what would cause this, im sure water got into a plug it shouldnt have and i unplugged every plug and cleaned/blew them out, but it still does the shitty shifting before this the trans worked fine? could it be the tps i have searched and some people say it could be that, a valve stuck open in the trans? Also when it does shift from 1st to 2nd its very hard(almost chirps the tires) can someone point me in the right direction, also i unplugged the battery and will leave it unplugged all night to let the check engine like go away(reset the ecu) also the car has the OBD2 plug, do our cars have a limp mode that would cause the trans not to shift?

Thanks again for any help, i did search but didnt find much...

[Ceepo]

Anyone have any ideas?

[Bigsyke]

Usually the limp mode is its stuck in 3rd gear. Did you get water in the trans fill tube? Check the codes is the 1st thing you need to do.

[Ceepo]

Check the codes and got a Knock Sensor, and O2 Sensor first bank(header o2 sensor) last night after i pulled the codes i reset the ecu and the car drives fine now, the check engine light came on again for o2 sensor but the trans shifts fine now, i honestly dont know how a knock sensor or O2 sensor could cause the trans to act up but all well, car is fixed, thanks for the help tho :) its getting a sr end of augest neway :P