Operating temp Question

[Bruce]

GM OEM guages are just slightly less then laughable for accuracy.
Whereas some of the Ford ones are.
Bruce




From: "Bob Wooten" <r71chevy at earthlink.net>
> I have a 98 Grand Prix, 3.8L NA motor.  I was noticing that it appears to
> run cold.  how hot is it supposed to run?
> the gauge looks like this.  the "--->" is where the temp sits most of the
>time.
> If I take (210-160)/2 + 160 this indicates that the motor is running @
185.
> this seems to be pretty darn cold considering that this is a 98 model car.
> my 71 came with a 185 stat, I would think that this car would tend to want
> to run warmer, maybe 210 or so where the middle of the gauge is.
> unfortunately I don't have a scanner for the car, so I don't know what the
> ECM thinks the temp is, but it seems to be quite happy.
> it also appears that that the ECM controls the voltage to the cooling
fans.
> when it gets up @ just above this 185 point both of the fans come on, but
> they only draw a small amount of air.  I cant imagine that this is all
these
> fans can pull, so I am guessing that it has a DAC or something that it
> outputs to the fans to control how much air they pull. am I way off base
or
> what?
> Bob Wooten


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