Would a thermostat that is stuck partially open cause me to run a little hot in the summer and a little cold in the winter? During the hot summer months here in STL I was running around 200 degrees F. Now, when it's colder I'm running around 174 degrees F. The temp outside has been right around freezing.

Thanks,

 

Two bolts to find out.......

 

You probably need a radiator. I'm running ~170F in the cold weather. Stat is brand new.

 

A stuck, or partially stuck thermo will cause the engine to run hot, no matter what the outside weather is.

 

When has a coolant flush been done last? Takes 15-20mins to change thermostat and make sure bleed hole is up.

 

If we are talking about a thermostat which is stuck OPEN, this statement is false.

A couple of years ago I took a 2 hour ride with an open thermostat in 15 degree weather and it was nearly impossible to get heat into the cabin.

When yo change your thermostat, get a piece of 3/8' hose and siphon out coolant from top of radiator into a container. Much easier and cleaner than pulling hoses off.

 

Yes, of course. I assumed we were talking about a stuck closed, or partially closed thermostat, which causes the most problems.

 

Where is stl ?

Either way with the stock 195 stat I would expect to run around 200 in summer

If you run a 180 stat and run 200 I would say you need to work on it

Right now I am running high 70's with 180 stat and its like 20/30* in morning, I am now running just electric fans

 

St Louis

 

The Lou!