RE: [eec] Check engine light/overheat condition

[Brian Leeper <brianl703@xxxxxxxxxxx>]

On Sun, 8 Dec 2002, David C. Compton wrote:

> You haven't said whether you have a gauge or an idiot light.

Gauge. I've never seen a car with an idiot light for an overheat condition
yet. Some of the GM diesels will actually beep at you and shut the engine
down 30 seconds later if they detect an overheat condition.

> You know you can make an idiot temperature light a lot cheaper and
> easier than programming an interrupt routine into the eec, right?

That's not really what I meant :)

The check engine light serves as the interrupt routine for the driver.

The EEC should take only changing a variable that controls at which point
the ECT is considered to be "out of range" and the check engine light
comes on.

Brian