Engine light when holding revs

Having a problem with a freelander with the L-series diesel,

When holding the revs below 2.5k for more than about 10 seconds the engine light illuminates, yet when you rev above 2.5k or drop the revs completely the light will go out until you hold them again..... No loss of power, no funny noises/leaks etc

the only thing is that the Aux belt snapped the day before yesterday, this was the only thing that has changed, new belt is on and its running fine apart from the above problem ??

ANy ideas ?

When the belt snapped it could have damaged a sensor or wiring ?

or it could not be adjusted right, make sure self adjuster is working ok

Would it have a sensor on the adjuster though I know that when the belt went engine was still running and only the battery light came on as it would cause the autonator was not charging battery and battery light is not on now or flickering I can have a check

Hi. Did you ever get to the bottom of this as mine has the exact same problem. Thanks, George.

not yet still on the case shall let you know

Did you stop the engine straight away and leave it till you got the new belt ?

The engine was still running as it happened on motorway I pulled over and checked then turned it off all of about 30 to 40 seconds only battery light came on when it was still running and temp did not boil over once it was stopped it was not started till belt put on