Thanks for the advice & suggestions. I understand that on a hot Texas summer day the temp go as high as 110c. What I don't understand is that it does this only when the car is at a stop sign. But, when I revvup the engine when at a stop light with temp hovering at about 110 -115C, the temp comes down to normal. I thought it could be a clogged up radiator but the fluid looks clean. Maybe I should remove the radiator and have it acid cleaned in pro-radiator shop. The sending unit tests came out fine and the auxilliary fans are operating normally as well.
92 190e 92K