With the A/C on going up hills and stop and go traffic 100c is a high normal when idling. Do you have the Aux fan, and does it work if so? I would think that is a bit high though. How long since you replaced the thermostat ? Or, maybe the radiator needs cleaned from the outside, fins. Behind my aux fan was dirt, twigs, grass, and bird feathers. Or, maybe the radiator needs flushed. Or, worst case, replaced. Or, maybe your water pump is shot. Any coolant leaks? I would start with the easiest and cheapest first. Keeping the cooling system straight is no waste of time.

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1984 300D Turbo Sedan (Hilda) 272,115 miles.....
Anthracite Gray/Palamino Leather, I am 3rd owner

2001 Dodge Stratus (Silver) (wifes) 55814 miles...

1982 280TE Wagon Astral Silver Metallic/
Anthracite Velour
260,512 miles (Eva)

1969 230 Sedan Olive Green/Black MBTex
4 Speed Manual
84,213 miles ????
Haus Frau


2004 Boreem Ninja Pocket Bike
Highly Modified 49cc (Ling Ling)

Einigkeit und Recht und Freiheit