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Heater valves
Quote:
Originally Posted by andrewwynn
The two cylinders on the top of heater hose sound like the heater core control valves left and right. (if by right side of engine bay you meant left (just in front of the USA left hand drive steering wheel)). I suspect that they get "cooled "from the coolant going through sui they are used to temps over 200 but why so hot when not even being used.
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Right as in standing in front of the car, looking at engine bay on a US car. I assumed they were just heater valves, but have no idea why they're so hot when the engine is not running. There is only coolant flowing while it's cranking. The hoses on either side were 87F degrees.
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Donald Foss 
2003 E53 3.0i, 5L40e (for now)
- self-rebuilt engine, valves, SL oil pump
- ported heads, both sides
- N55 intake manifold, 70 lb injectors
- GTX 2860R-clone 60mm top-mounted turbo
- progressive slip diff
- under chassis cats
- extra sensors wired to Arduino
- 15" touch screen dash-mounted
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