Quote:
Originally Posted by jhv48
Make sure the sensor extends all the way into the oil and isn't touching the metal pan, thus measuring the temp of the oil pan instead of the oil. And yes, this has happened before. The bung in the oil pan may not be letting the sensor extend fully into the oil to get an accurate read. When you remove the sensor again, stick a bent paper clip into the hole and hook it on the inner lip of the bung. Then measure the length of the bung and compare it to the length of the sensor. The sensor must extend beyond the bung in order to accurately measure the oil temp.
Don't worry. Your engine is running warmer than 140. It's either a faulty sensor or faulty placement. If you have a remote oil filter, you can try mounting the sensor there temporarily for a comparison. |
Hmmm, maybe something valid here. If the sensor isn't going through far enough then the initial temperature is waiting for the mass of the pan itself to get to temperature. That lag could be significant. Makes sense. I'll look at it next time I change the oil.