TyrePal sensors seized onto valve stem threads

RichardPitman

Noticed that one of my rear sensors wasn't registering today. Usually, unscrewing it and replacing it 'resets' they system. However, I discovered that both rear Tyrepal sensors are seized onto their threads.

I will apply silicon grease to the front two, which still undo OK, should have done this in the first place.

Does anyone have any suggestions for removing the rear ones ?

So far, I've tried hot water and vice grips, one to hold the valve stem, other to grip the Tyre Pal, no joy. I didn't apply extreme pressure, don't want to rip the valve out. Hope to save the sensor, but if it has to go, so be it.

Just sprayed some carb cleaner onto it, come in for a cup of tea.