Quote:
Originally Posted by The Radium King
i'll buy that. so presume then that engine wants to steady-state at around 174 and low temp tstat lives in the open position.
oem tstat at 180 cycles on and off, resulting in temp peaks and overall higher average operating temp (theory being that Porsche used a 180 tstat to increase start-up temps for emissions; competition cars not required to meet emission standards run 160 tstats as standard).
in the context of this thread, what would cause the engine to lock-in at a higher temp. initial assumption is that the gauge is too inaccurate to be trusted. what if the tstat stuck closed? would the engine find a higher steady state temp (engine bay fan cooling, etc.)?
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First place I would look would be how clean are the radiators, we often find literally pounds of crap (leafs, grass, paper, even a dead bird or two) between the AC units and the radiators on these cars.
 
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Last edited by JFP in PA; 05-22-2014 at 04:17 PM.
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