New holland tm not going above c1

[ridger]

What could be up with it? Its fine in all other ranges.

 

[icanshootwell]

Its probably a solenoid issue, try switching them.

 

[ridger]

Strange how it works in a and b range though. Cant be syncro because it goes into the high range

 

[Jato]

Poss trans temp sensor issue.
This limits the trans to C1 if extreme cold.

also poss speed trans speed sensor asC range has speed detection to auto shift through range.

 

[ridger]

Poss trans temp sensor issue.
This limits the trans to C1 if extreme cold.

also poss speed trans speed sensor asC range has speed detection to auto shift through range.

Would the temperature sensor have a fault code? It won't calibrate, says u33 which is handbrake not on, but it is on and the handbrake light is on dash as well

 

[Jato]

Not necessarily, as if reads colder than actual temp, ECU will think it needs to protect it.
What temp showing when you go to calibrate?

 

[fermerboy]

Would the temperature sensor have a fault code? It won't calibrate, says u33 which is handbrake not on, but it is on and the handbrake light is on dash as well

The handbrake switch is two circuits, mine kept saying handbrake not on but light was working.
Look at switch and wiring there are 4 wires for two circuits. Changed mine and its been grand since.

 

[ridger]

Have her sorted now, it thought that it was in the creeper box, handle must have got moved just enough to activate the switch