Water Pump and Thermostat

[NewArt]

Braszucca, lift the mat under the coolant tank. Is it perfectly dry down there? Check the cap. The overflow hose runs down where you are describing.
Re: the low temp thermostat, I put one in and have noticed absolutely no difference in running temperature.

[Pdwight]

Well FWIW Brad is right, I was not thinking....I did this to my E36 years ago when I replaced the radiator and water pump and it runs in the same place...but I do have a little better peace of mind.