Question about 1994 Saturn Sl
If you have A/C, you can check the system from the PCM output through the relay and to the fan motor by turning on the A/C and blower (with the engine on, of course): the cooling fan motor should turn on and stay on for several minutes.
Also, as you may know, this vehicle has a one-wire temperature sender that controls the dashboard gauge, but nothing else. (This one connects to a dk.green/yellow banded wire -- or maybe green/white banded.)
The other, two-wire temperature sensor is the one that connects to the PCM. This one has one yellow and one black wire. I assume that this is the one that you replaced.
And, in principle, there's the PCM itself that could be giving an inaccurate temperature... but that's expensive, so let's not go there...
Posted on Oct 11, 2009
Check the fan relay
Posted on Oct 06, 2009
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Posted on Jan 02, 2017
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