When to turn on the thermo fan inlet or outlet?
If you are using the inlet of the engine (coming from the radiator) then you’d want a switch that turns the fan on at (say) 70deg – assuming there is an approx 20deg rise in temp when the water exits the engine.
What are the low and high settings for thermo fan?
Low on at 85 and off at 80. Not sure what the high settings are as it doesn’t exceed 85 once the low fan speed cuts in. In your case you could go a dedicated adjustable fan controller which would allow you to adjust temps accordingly. http://www.spal-usa.com/fans/automated/accessories/fanpwm.html
Where is the temp Guage and electic fan sending unit?
Installed the temp sender for gauge where the original one was installed on the driver’s side head. I also have A/C, so I installed a diode in the power lead to the fans to keep the current from “back flowing” to the relay when the A/C is turned on.
When to turn on the thermo fan in the radiator?
If you are using the outlet of the engine (going into the radiator) then you’d have a thermo switch that turns the fan on when the water is 90deg.
If you are using the inlet of the engine (coming from the radiator) then you’d want a switch that turns the fan on at (say) 70deg – assuming there is an approx 20deg rise in temp when the water exits the engine.
Installed the temp sender for gauge where the original one was installed on the driver’s side head. I also have A/C, so I installed a diode in the power lead to the fans to keep the current from “back flowing” to the relay when the A/C is turned on.
Low on at 85 and off at 80. Not sure what the high settings are as it doesn’t exceed 85 once the low fan speed cuts in. In your case you could go a dedicated adjustable fan controller which would allow you to adjust temps accordingly. http://www.spal-usa.com/fans/automated/accessories/fanpwm.html
How does a coolant temp sensor work on a fan?
Coolant Temp Sensor – LH head. I have used a t-stat housing mounted fan switch with excellent results. Sounds like you hooked up a gauge to a temperature switch. That’s a problem right there. A gauge won’t run off a temperature switch. Also that temp switch supplies the switchable ground connection to the fan relay.