re: kelly mayo


Asked by May 02, 2016 at 04:07 PM

Question type: Maintenance & Repair

92 Buick riviera. Changed temp. Sensor.
Radiator fan won't work. Straight wired to
battery w/ toggle switch. Works! Relay
seems OK. All fuses OK. Did the computer
check on my car. Said ecm, mass airflow
sensor. My cluster, which goes on and off

1 Answer

Kelly Mayo

The coolant temp sensor is the temp sender - Here's a link to a diagram for your engine - it's part #541 The temp sender should be near the cooling system thermostat #524 on the diagram. The temp send has two wires coming from it - a ground and the coolant temp wire that runs to the ECM - this in turn controls the output to the gauge cluster including the overheat light.

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