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Re: Average temp ranges?
Temperatures of underhood components are not consistent.
A properly-functioning cooling system will keep the coolant, block and heads at a fairly consistent temp, when the engine is warmed up.
But exhaust system temps vary a lot. Exhaust manifolds and pipes get much hotter when an engine is operating at a heavy load (trailer-towing, driving up steep hills at highway speed etc) than they would at idle.
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