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Clare Snyder Clare Snyder is offline
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Default Why are motors not current limited?

On Sun, 29 Apr 2018 11:42:49 -0600, rbowman
wrote:

On 04/29/2018 07:42 AM, Jimmy Wilkinson Knife wrote:
I'm just applying basic common sense. If something is going to kill the
car, the car needs to react to this immediately. An analogy is the old
AMD CPUs on computers, you can find a video on Youtube of someone
comparing one to an Intel. They removed the fan and heatsink while
playing a game, and the AMD caught fire. The Intel just slowed down and
continued.


That's precisely what the 'limp home' mode is for. In an emergency most
people would prefer the car keeps running rather than crapping out 10
miles from the emergency room as they bleed out.



And on the AMD you didn't need to remove the heat sink for them to
burn right through the motherboard -- - - -





There are two "modes" to a CEL on "modern" (later than 1996) cars.

The solid light means there is a problem (usually emissions related,
but not exclusively) that requires attention.
A FLASHING light means there is a problem that will likely cause
damage to the engine or it's systems if you continue to drive.

This allows you to get to safety, but MAY cost you additional repairs.