The coolant temp gauge in my stock cluster stopped working last year. This year, it turns on and off intermittently. I assumed it was just the sender, but I didn’t have time to pursue it until now. I just replaced the sender (the one wire display sensor on the driver’s side of the motor) and it did not change anything. The gauge still doesn’t display even when the car’s warmed up. I measured the resistance of the sender fully warm and it’s about 45 ohms, as compared with 330 ohms cold. I also measured the pull-up voltage (ignition on, sensor unplugged) and got 1.5 V. I tried grounding out the wire which should indicate extremely hot, but the gauge still reads cold.
Has anyone else had this problem or something similar? Is there voltage regulator like older cars? Can the coolant gauge be serviced or will I have to replace the whole thing?
Thank you, Mike
Has anyone else had this problem or something similar? Is there voltage regulator like older cars? Can the coolant gauge be serviced or will I have to replace the whole thing?
Thank you, Mike