Your conversion is pretty close to temperature Darn cold here, I agree, and colder tomorrow. Block heaters are standard features on all vehicles sold in my city.

As for the transmission fluid, it has not been changed and I have been following the recommended service intervals (8000 kms between services)pretty closely. I have 72000 kms on the car now (I commute out of town).

Would this elec sensor tie in with the throttle sensor at all? If the throttle sensor was replaced and not the other would it keep slowing down?

The other options people have mentioned to me is that it could be anything from the fuel pump to the fuel injection system.

I know I don't have a lot of information to be able to give everyone an accurate picture of what's happening but I do appreciate the responses and I'm keeping a list for the dealership to check over when I take the car back to them after the holidays.

Deanna