Busted Temp Sensor?

[Shannen Durphey]

swagaero wrote:

> Joe Boucher wrote:
> >
> > I tested my temp sensor today with a resistance meter and came up with 0
> > ohms.  According to my "Computerized Engine Controls" book most temp sensor
> > resistance is high when the temp is low and low resistance when the temp is
> > high.
> >
> > What is wierd is my symptoms are for a cold engine.  Easy cold start, hard
> > hot start without holding the throttle in the clear mode and I can often
> > smell gas without finding any leaks and my gas mileage sucks.
> >
> > The Camaro is in the middle of a clutch diagnosis so I plan on keeping the
> > mileage down on the Suburban till I can figure this out.  After pulling the
> > sensor I will tes it again as the sensor position is not easy to test.
> >
> > Any thought or confirmation?
> >
> > Thanks
> > Joe Boucher
> > '70 RS/SS Camaro  '81 TBI Suburban
>
> Joe
>
>         Replace the CTS it will read at ambiante 3600 ohms +- hot 180 Degrees F
> 300 ohms
> ECM is going into limp mode
> Steve
> --

Actually, I would say it is treating the engine like it's at -40 deg. F., dumping
lots of fuel.  At least until CE light appears, if it does at all.  And with a
trouble code stored, it probably isn't going into closed loop, but it will still
control spark timing, rather than relying on the module. Just some pennies worth.