[ktmccrary]

Short answer: MAYBE. The temp is calculated in the fuel MAP and thus affects mileage. But the temp you see on your gauge may not be the temp seen at the PCM. The sensor has a dual output. One goes to the instrument cluster for your gauge, the other to the PCM for the fuel MAP. If you hook up a scanner, the temperature you read is from the PCM input, not the gauge. They should be the same, but obviously will vary. I can scan my temperature, but I am still trying to troubleshoot why I don't have a signal on my gauge. Good Luck! Don't change the sensor unless you are getting significantly different readings on the gauge than you are the scanner, if you are sure the gauge is working properly.