Coolant Temp Sensor Wires?
Thread Starter
Melting Slicks
Joined: Jun 2013
Posts: 3,065
Likes: 39
Coolant Temp Sensor Wires?
Hey guys, I have a 1985 Corvette with and inaccurate Coolant Temperature Sensor for the ECM.
What happens is, when I look at the dash gauge it says 200* F, but when I look on my scanner, it says 160*. I went on All Data and looked up a chart.
At 160* F, the sensor should read 450 ohms, and at 210* F, the sensor should read 185 ohms.
My sensor reads 239 ohms, when the scanner is displaying 159* F.
So I figure that the sensor is pretty accurate because when I turned the car back on the dash temp gauge read 188* F.
So, I want to test continuity from the wires at the CTS, to the wires at the ECM. Does anyone have a wiring diagram for it? I can't seem to find one on All Data.
Or maybe does anyone know what the terminal numbers are on the connectors at the ECM?
Thanks!
What happens is, when I look at the dash gauge it says 200* F, but when I look on my scanner, it says 160*. I went on All Data and looked up a chart.
At 160* F, the sensor should read 450 ohms, and at 210* F, the sensor should read 185 ohms.
My sensor reads 239 ohms, when the scanner is displaying 159* F.
So I figure that the sensor is pretty accurate because when I turned the car back on the dash temp gauge read 188* F.
So, I want to test continuity from the wires at the CTS, to the wires at the ECM. Does anyone have a wiring diagram for it? I can't seem to find one on All Data.
Or maybe does anyone know what the terminal numbers are on the connectors at the ECM?
Thanks!
Safety Car
Joined: Aug 2002
Posts: 3,842
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From: SANTA CRUZ CA
