Low readings on new Coolant Temp Sensor
Just replaced coolant temp sensor and it now reads much lower temps. Temp sensor seemed to be working fine, had no problems, but I'm a stickler about preventive maintenance. I've been running a 190 deg stat and the truck runs at 188 deg on nice cool days to 190-192 on warm days. Lately now that it's starting to get into the high 80's and 90's it's starting to run 194-195 so I figured I'd put a new one in because I have replaced it for a couple years. Replaced stat last year, all new coolant, new radiator, new cap. Runs great, no overheating. I got a new Crown Part #5149077AB (Original Manufacturer of sensor) and put it in. Filled up what fluid I lost, made sure no air in system, driven for 2 days and the temp on the gauge and the digital reading read 179-181 and make it up to 185 deg after driving for a while. Got home from work and digital reading said 181 deg so I took my infrared gun out and it read 188-189 right beside the temp sensor on the casing of the water pump. I know all sensors have variances but this seems a bit much. Changed nothing but temp sensor. Do I have a bad temp sensor?