Reply to "Did new ac system instead of Atomic throttle body fuel injection"

jffrMember

If you use the EFI ECU to control your radiator cooling fans, you will have to run a wire from the ECU to the radiator cooling fan relays. Keep in mind that if your EFI coolant temperature sending unit fails, then your radiator cooling fans will not come on. In my opinion, leaving the radiator cooling fans on their own circuit is a better option. Putting the EFI water temperature sensor in the block will give the ECU a quicker temperature reading and get you into the closed loop mode sooner, but it won't be that much quicker than having the sending unit in the thermostat housing.

6/29/2011:24 AM

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