Many Many Thanks!
The Denny Graham pictures helped a lot.
My thermostatic spring was installed backwards and was holding the valve wide open.
I previously said that it runs great - hot or cold - BUT I have never driven in really cold winter weather.
One thing I did notice was that the incorrectly installed t'static spring was installed with a lot of pre load. More than one turn. Is it possible that with the valve "jammed open" that this could be causing my rattle above 2000 RPM?
As soon as it stops raining I'll go out for a test drive. Another thing I noticed is that the spring slot isn't very deep. The spring sits precariously at the end of the shaft. Is this common? Could I lose the spring while on the road?
Thanks Again
