05 Freightliner water temperature not working. Shop said when they plugged in the ecm it showed water temp. When I ground the guage out the needle will max out. Could the guage still be bad? What should I test next?
Water temp guage not working
Discussion in 'Trucks [ Eighteen Wheelers ]' started by ready2truck, Jun 18, 2021.
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You ground the gauge it pegs out and with the wire off it goes back to zero?
I'd suspect the sensor is toast. Most trucks of that era had a temperature sensor for the ECM and a seperate one for the gauge.ready2truck Thanks this. -
It's a c15 acert -
ready2truck Thanks this.
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