My electric fan has been running for a few minutes at startup. I just noticed it this week. I don't think it was doing this before.?? I think I would have caught it earlier. It runs for maybe 3 minutes and shuts off. It's been in the 40's in the morning at startup. Runs great, no codes. I had a GDE EcoTune done on it about a month ago. Could it be part of that and I'm just now noticing it? Is this normal?

Billy