Question: Gauges for Oil / Coolant temp not reading but Digital readout for both OK. 1992 C4

[92ghost]

Gauges for both Oil temp and Coolant temp are not reading but the Digital readout for both are working fine. Don't know if there are separate fuses for these or not. It's the Analog gauges and not the digital for temps. Everything else on the dash display is working properly such as Volts etc. Any ideas?

1992 LT1 w/Auto.

 

[92vetterob]

Same here!! Is it the sensor and or sensors?? I have the same problem 92 as well!!


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[vetteoz]

Gauges for both Oil temp and Coolant temp are not reading but the Digital readout for both are working fine.
Any ideas?

Independent sources

Analog temp from the sender in the head ; digital temp from the CTS in the WP via the ECM
Check wiring tosender, ground the relevant wire at the sender and see if the gauge moves ?
If it does ,sender is most likely faulty

 

[92ghost]

Thanks for the input vetteoz - where are the sensors for temp located (both Dig, and Anal if not in same location) are they on both heads or just one. What you showed was the Oil pressure (OP) in picture, and Oil pressure working fine.

 

[vetteoz]

where are the sensors for temp located (both Dig, and Anal if not in same location) are they on both heads or just one..

As stated above, the CTS that the ECM uses for its calculations ( and the digital temp indication ) is located in the water pump
Gauge sender is in the head

Oil temp sender is located above the oil filter