Originally posted by SVTNupe:
Just checked the temps again. The engine idled for about 15 minutes with constant temp of 217 (from the PCM ECT sensor) with both fans running and A/C off.

Perhaps doing the tune, the fan turn on settings were changed.


If you have a custom chip then "yes" the fan turn of temps could have been changed.

However idling at 217 degrees SUCKS ASS!!! You have other issues you need to address immediately.
Water pump?
Coolant mixture?
Radiator?

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.