Question about 1991 Chevrolet Silverado 2500

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1991 siverados temp Gage dosent work, is it the temp sensor or what?

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Replace the temp. sending unit. It's usually found on the driver side head on the side above the exhaust manifold.

Posted on Jun 23, 2008

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Posted on Jan 02, 2017

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sound like a bad sensor[sending unit]

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1 Answer

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1 Answer

Codes 21 & 24


HI
the (ECT)coolant temp sensor have two wire and you can test it by (AVO meter) the two wire :-
the 1st is ground from ECM
the 2nd is have 5 volt whine disconnect the connector
of (ECT) and less then whine connected the (ECT)
the (ECT)was electronic thermo resistor
the one wire sensor work to coolant temp gage in dashboard

the (VSS) locate in trans axle it was electromagnetic sensor send signal to determine the distance in (KILOMETER)

with my best wishes

Jul 03, 2008 | Hyundai Motor 1991 Scoupe

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