I purchased a cooler running thermostat and went to fit it today.
Snapped the heads off both the bottom bolts, drilled it, tapped it etc and then compared old and new 'stats. Only to find that the part numbers were the same and some numbnut had put it in the wrong bag
So i put my old one back in and the temperature before this palava, reached 98 deg and then the fan cut in and the temp went down rapidly.
Now (same 'stat) the needle raises above 100 deg (not into red) and the fan cuts in
So whats happended, the stat is opening and the fan cutting in but there appears to be 3/4 degrees lost somewhere thru taking it out and putting it back.
Ok - i checked the connection on the temp sender and emery clothed the contacts, did no good.
Could the rad be blocked??
Could the different ratio of antifreeze/water cause any problems??
Why me, any help on this please folks