Join Date: Mar 2002
Location: Ottawa, Ontario, Canada eh?
Check your thermostat.. it's been getting cooler out lately.. over the last week actually..
So try this.. they're only $12 or so canadian.. so even less in U.S. Funds.. find the appropriate one with proper factory temp specs.
remove yours, clean it, boil it in water, time how long it takes to open.. and keep note on how well it opens.
repeat with the new thermo.. and see if there's a difference.. sometimes when they're going down hill.. they may only partially open when getting old, or open very very slowly.. dangerously slow..which causes this to happen.
The same thing happened to me, and the boil test DEFINATELY confirmed it. I was shocked to see how bad my thermo was behaving.
That, or it could be a water pump going out on you. Any strange noises from your engine?