Quote:
Originally Posted by yukio
Ok, thanks for the replys.
Ill try some other stuff tomorrow.
I am still thinking that when the thermostat opens, cold water get to the "temp sensing" side of the thermostat, which in turns closes the thermostat.
Does the backside of the thermostat (passage to the heater) need alot of circulation of hot water to get the thermostat working properly?
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I don't think this is it. The thermostat is more efficient if you have your heater hoses flowing full time as opposed to a shutoff valve in them. This is how all LS motors work from the factory. However, plenty of people run the ports blocked without any trouble.
I suspect air in the system. Where does the steam vent line go? Next time the car is fully warmed up and you are sitting still try reving it up above 2,500 rpm for 30+ seconds. If the temp drops then you have air trapped in the system.