[galaxy]

Just got my bike back from the shop for a bad radiator cap. It was overflowing the overflow tank and running out all over the ground. Shop said it was the cap and replaced it. Well, when this was happening, I told the guys it also warmed up EXTREMELY fast. Never overheated or got above 102, but it get's there in a hurry. I guess we all assumed the two problems were related. But, it's still warming up too fast, and it never used to do that. Here's a better description...

Going down the road the temp stays right around 68. Never seen run any colder than that. But, as soon as you come to a stop or in slow traffic, the temp skyrockets to 99+ to the point the fans are coming on. Once the fans kick on the temp comes back down a couple and it continues that cycle until you hit freeway speeds again and the temp drops back down in the 71 range. As before, it never overheats or gets above 102, but I just never remember it warming up a that rate. Even back in the summer traffic it would take several minutes to creep up to the point the fans would kick on. Is there something about the outside air temp that makes it act this way?? Any ideas of another potential underlying problem??

My next thought was possible thermostat stuck closed. Even with the thermostat stuck closed, there is still some bypass/coolant flow through the system. This combined with the cold outside air temps, may be just enough to keep it from overheating but causing the current symptoms. What do you guys think? Is there an easy way to tell if a thermostat is stuck witout removing it?