My Cooling Improvement Project (hopefully)

Bill,

I did not say that the IAC was causing the higher temps.

I was trying to say that due to the poor state of my incomplete tune that the engine is still running on the lean side contributing to the higher temps.

There is a problem with the FAST XFI box.

It is throwing a Stayus 12 code which is "Thermal Overload".

According to the FAST Tech Forum, that means the IAC driver curcuit in the box is bad and needs repair.

With the IAC not functioning the car is very hard to drive due to idle problems caused by having no throttle follower.

When coming off a crusie condition on slow down or at a stop light. The throttle close to quick and the engine will die.

Herb