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Any info on how the computer works ('95 t&c)

With the computer being all powerful under the hood, it would really help to know how the darn thing works.

This came up in a previous topic ('95 T&C Mystery Engine Death) - the question was - what conditions would cause the computer to activate the AutoShutDown Relay?.

But my question here is - is there any free (detailed) info on how the computer works? And failing that, is there any info for sale?

Dominic - Still driving in 90+ weather with no AC so I dont suddently stop in the middle of the highway.

Reply to
dtzjread
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I think the purpose is to shut off the fuel pump and fuel injection if the engine stops turning. I think it uses the crankshaft/camshaft position sensors to determine whether the engine is turning, and I believe those are common problem areas.

Hopefully one of the true experts will jump in here... ;-)

-Paul

Reply to
carbide

How the computer "works" would fill several books, if you want the detailed version. No two car companies make them exactly alike, either. My son's older Mustangs has the computer program in a chip that can be removed, replaced, or upgraded. Some of my recent Chrysler products have the entire module filled with plastic Jell-O so nothing can be removed. Upgrades/updates are done by updating an EEPROM through the diagnostic cable. I know of nowhere you can find or buy the detailed version.

The simple version is that the computer monitors everything with a sensor in the engine and tranny, and then adjusts everything variable in the engine and tranny for the best economy vs. power under the existing conditions. It varies fuel/air ratio, ignition timing, etc., in the engine, and tells the transmission when to shift, based on throttle position, engine load, etc.

Reply to
Dan

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