So I'm having a minor frustration with the Loyale. It is overheating. I've replaced all the hoses (or they were replaced last summer). I've replaced the radiator cap. I've done a flush and fill. The thermostat works (I think), as the upper rad hose gets HOT once I'm up to operating temp. New radiator last summer. Radiator doesn't seem to have any cool or hot spots, just the expected temperature gradient.
It doesn't seem to be as likely to overheat if the temperature is lower (in the 70s), but it still creeps up quite high if I drive long enough. On 100 degree days it gets close to red about 20 minutes after I start driving. Fan is running, etc. Driving on the highway delays the creep-up factor significantly, but still gets there eventually, especially if I slow down below 50 or so.
The only thing I can think of is this: the overflow bottle is missing that little green cap, and most of my problems have started since then. Can that little overflow cap really make that much difference???
I also replaced the horseshoe gasket in the throttle area, but there are no external leaks (there were before). I lose very little fluid, it is small enough amount I can blame the loss on boiling out of the overflow container, but the question is why is it getting that hot to start with?
If it IS that small green cap, well, I'll be a monkey's uncle, I guess, just wanted to inquire to other minds if I need to look at anything else before I make a trip to the junkyard for...a bottle cap.
*ETA: I lost the green cap while doing the gasket replace and coolant flush (was over the course of three days or so last month, and did the hoses at the same time, not sure which factor I screwed up on ).
Edited by man on the moon, 22 July 2013 - 02:47 PM.