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2026. 6. 30. 작업
Do cars ever use electric water pumps?
BMW abandoned their mechanical water pump in the 3 series when they moved to the E90 generation in 2006. The electric pump is the only pump. A quick search reveals that all other typical cooling system components (i.e. thermostat) still exist, so even when the engine is warming up the coolant circulates. This is probably to prevent hot spots which could happen if the pump just stopped. There is a flow sensor for feedback so if the pump starts to fail the ECU can set a trouble code. E90 owners have reported low flow code as much as a month before total pump failure, but I'm sure reliability and failure rates vary by make/model just like anything else. It seems there are two primary benefits to electric pumps: They don't need a drive belt, so they may be located virtually anywhere. They can run with the engine off. Running with the engine off seems trivial for non-turbo and non-hybrid cars until you consider that most European cars turn off their engines if they come to a complete stop f
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2003 Hyundai Santa Fe will start then die. Then it will not start. After pumping the accelerator or holding on the floor and returning later it will start. Nothing codes out. This happens probably 15% of the time. Any ideas?
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A friend has an older Miata that was improperly stored for at least three years. Most of the time, it was not garaged. The gas is old, the battery is dead, it has not been started. It was probably parked without an oil change. He is looking to do the minimum to get this sellable, so the primary concern is the initial startup and the brakes. What would be recommended , especially regarding that first engine startup?
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I am planning to start using seafoam in my gas and oil ,how often should you a add it an how much.The label isn’t to clear about it.
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I’ve asked a few mechanics and DIYers this question and so far no consensus. Let’s say you’re 1000 miles away from next SCHEDULED oil change, and you’re about to leave on a 2000 mile road trip. Would you choose to change your oil 1000 miles early before the trip, or 1000 miles late after the trip?