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Old 02-25-2017, 11:20 PM   #13 (permalink)
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UFI - '12 Fiat 500 Twinair
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90 day: 43.3 mpg (US)

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I changed out the factory fill oil at 3260km, ideally I'd have done it a bit sooner, but you know...

When I removed the undertray, I was able to have a bit of a poke around under there.

First thing I spotted was the in line electric water pump to cool the turbo after shut down (the actual water pump is a variable geometry design). This explains why I can hear a whine much like the Prius inverter pump after shut down:

It seems that this would be a good idea for anyone with a turbo doing much engine off stuff. My Fiat has factory S/S and no such pump!

Electro-Hydraulic Power steer pump. This explains why the steering works with the engine off, but it feels like hydraulic steering:

Could be useful for swaps into bigger vehicles where the Toyota MR2 pump might be insufficient. I didn't look into how complex the wiring is, but probably not as simple as the Toyota three wire hook up.
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