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Cooling issues

862 views 6 replies 5 participants last post by  Foxmlee 
#1 ·
I have an issue I'm hopping someone in the forum cam help with. I installed a Holley Terminator EFI system and I love it. My issue is cooling. I continue to get erratic cooling temps. I'm running a Ron Davis radiator with dual spal fans programmed.#1 fan comes on at 190 and off at 185 #2 on at 197 and off 192. Thermostat is a new 180° with new CTS sensors. The gauge on the car will reach 191 and hold there for a few minutes before steam starts coming from the overflow then the thermostat opens and car cools down. Then if I drive the car in 77° weather or less down the highway the car cools way down to as low as 119°. I just want to regulate the temp to stay at least 160°. The CTS sensors are in the RPM air gap intake currently. My,next attempt is to buy Holley CTS sensors and install in the block but would love any advice that will help.
 
#3 ·
Probably a stupid question but is your thermostat installed backwards?

Where is the temperature sensor for your fan controller.

Don
 
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