I have a 4960 johndeere year 1994 wont crank fast enought to start inless you turn steering weel at same time

Try this site

http://manuals.deere.com/omview/OMRE260580_19/OUO1023_000289B_19_21SEP06_1.htm

run the fault codes
check for cam/crank position sensors failure, immobilizer failure , pump operation
could be a failed ECM
have the battery load tested as it may be the original fault and jump starting may have caused a power surge and damaged the ECM

No cranks is here
https://www.jeepdied.com/no-crank.html
TURNS OVER MEANS ZERO.
the starter just CRANK.
THE START MOTOR TURNS
IF lucky so does the crank shaft turn.
then the engine starts and runs, (this is not turns)
it's running
the EFI then sustains running , if ABS stays happy.
the engine can also stall.

sounds like you have a hole in piston check compression with a compression gauge, should be about 125 psi

starter or battery not sufficient capacity to crank the engine fast enough under compression

take a chance and replace a $ 25.00 crank senser you will need one sooner or later

the fact that the car crank's fast could be from low compreshion, or lake of fuel! does the gas pump tern on when u turn the key to on but not enought to start the car? get somwhone to lie on the ground near the tank and cycle the ignition a few time's

Its on the starter

check your fuel pump you may not be getting fuel to the engine fast enough check your carberator or fuel injectors also which ever you have as these may be the reason for a lack of fuel. In particular if it is fuel injectors you may need to clean them out to get rid of a clog hence a slow fuel delivery

could be neautral safety switch ours does this and we have to pull it out of park and put it back into park or hold the shifter lever up while turning the key the sec light should go out if it starts. ours does.