mf 6490 error code 94 help

[dee]

View attachment 811252 Are these the four range solenoids?

Yeah they are your range solenoids. Do as always wandering has mentioned but I find you need the transmission to be over 70 for the fault to appear.

Also remove the plugs of the 4 range switches to check there is no oil in them.

Replace the offending switch if there is

 

[Leonb]

Thanks lads I’ll try that today and let ye know how I get on.

 

[Leonb]

Still no luck!! Happened again today at slurry tractor was warm fault came back up was stuck in range 3 but showed 1 on the display down beside the shifter. Check resistance of all four solenoids all read similar 11.5 ohms kept driving it eventually went back to normal. Could there be some dirt stuck in the solenoid ports?

 

[Leonb]

Update. I swapped around the range switch’s I put switch 1 + 2 in 3 + 4s place problem hasn’t happened since so maybe one of the switch’s was sticking and it thought it was in two gears at once.

 

[davidroberts30]

Update. I swapped around the range switch’s I put switch 1 + 2 in 3 + 4s place problem hasn’t happened since so maybe one of the switch’s was sticking and it thought it was in two gears at once.

sounds more like bad contacts

 

[Leonb]

Cleaned all the plug connectors a couple of times before I swapped them and was still happening and hasn’t happened since I swapped the switchs