[billb]

Are you sure about those numbers?

I just found my old one and it measures 2.5k ohm. It's been sitting in the garage all day and the temp is about 60 degrees.

Since my new one didn't make any difference in performance, I was kind of thinking that the old one was going to measure the correct resistance.

I just checked it again. It's 2.5k when cold. When I stick it in almost boiling water, it goes down to about 425 ohms. Stick it back in cold tap water (that should be around 65 degrees), it goes back to 2.5k. This is the old one I took out. If your numbers are right, it's definitely bad and the ECU would think the engine is warmer than it really is.

If that new sensor is bad, I'm going to be really PO'd. I've spend so much time and money chasing this problem. My daughter is out in the car so I probably won't be able to pull it until tomorrow.