83VR STD
On cold start, warms up at idle or cruise until temp on gauge reads right at red/green line. Fan also comes on at red/green line, even at 50degF. Then suddenly starts to cool down to about 3/4 middle green. Then starts to rise all the way back to the red/green line. Does this cycle apx 3-4 times until finally cools to just above 1/2 middle green. Then it stays here rest of cruise, unless stopped in traffic, where it climbes back to red/green, fan cools to about 3/4, and cruising again cools to 1/2.
Thinking thermostat sticking when cold, and takes over high temp to get it to open.
Opionions?