Entropy LSX Radiator with dual fans - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**66ChevyMax** · 08-12-2016, 10:12 PM

My brain is tired, need some help.

So I have installed a radiator from Entropy, their LSX version with dual fans and two speed controller.

Original ECM thermostat is in the drivers side of the block, Dakota Digital Temp unit is in the passenger side of the block.

The radiator came with another thermostat with absolutely no markings. If I splice the fan controller temperature units wiring into the ECM unit the truck will not start.

I have not tried to splice it into the Dakota Digital Temp unit yet.

Any ideas of how to make this work? Sorry if I have confused you more than I am already.

**Hart_Rod** · 08-13-2016, 10:52 PM

Why not let the computer control the fans? Or use a temperature switch in the radiator?

**mongocanfly** · 08-13-2016, 11:01 PM

Same as hartrod said ..I've got dual fans and dual relays..each fan has its own relay that are run by the ecm..each fan is set to come on at a different temp

**66ChevyMax** · 08-14-2016, 01:18 AM

ECM only has 1 fan circuit, I want to use the controller because of the two speed control and staggered start of the fans.

Removed the Dakota Gauge temp sending unit and installed one for the fans. Will use ECM to feed temp to Gauges in Dash.

**Hart_Rod** · 08-14-2016, 08:35 AM

Quote:

Originally Posted by 66ChevyMax

ECM only has 1 fan circuit, I want to use the controller because of the two speed control and staggered start of the fans.

Removed the Dakota Gauge temp sending unit and installed one for the fans. Will use ECM to feed temp to Gauges in Dash.

Why not put the Fan temp sender in the radiator?

**66ChevyMax** · 08-15-2016, 03:12 PM

That's a possibility but with the heat this thing runs I would prefer in to be in the block.

08-12-2016, 10:12 PM	#1
66ChevyMax Senior Member Join Date: Oct 2011 Location: Wolfforth, Texas Posts: 976	Entropy LSX Radiator with dual fans My brain is tired, need some help. So I have installed a radiator from Entropy, their LSX version with dual fans and two speed controller. Original ECM thermostat is in the drivers side of the block, Dakota Digital Temp unit is in the passenger side of the block. The radiator came with another thermostat with absolutely no markings. If I splice the fan controller temperature units wiring into the ECM unit the truck will not start. I have not tried to splice it into the Dakota Digital Temp unit yet. Any ideas of how to make this work? Sorry if I have confused you more than I am already. __________________ Craig 1966 Chevrolet C10 - Supercharged LS3 1968 Chevrolet Camaro 1957 Chevrolet 2dr Hardtop "It makes sence if you don't think about it" Mesquite 1966 C10 - LS3 W/ Air Ride http://67-72chevytrucks.com/vboard/s...=1#post4989763

08-13-2016, 10:52 PM	#2
Hart_Rod ************* Join Date: Apr 2005 Location: Pensacola, FL Posts: 17,852	Re: Entropy LSX Radiator with dual fans Why not let the computer control the fans? Or use a temperature switch in the radiator? __________________ Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3

08-13-2016, 11:01 PM	#3
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,658	Re: Entropy LSX Radiator with dual fans Same as hartrod said ..I've got dual fans and dual relays..each fan has its own relay that are run by the ecm..each fan is set to come on at a different temp

08-14-2016, 01:18 AM	#4
66ChevyMax Senior Member Join Date: Oct 2011 Location: Wolfforth, Texas Posts: 976	Re: Entropy LSX Radiator with dual fans ECM only has 1 fan circuit, I want to use the controller because of the two speed control and staggered start of the fans. Removed the Dakota Gauge temp sending unit and installed one for the fans. Will use ECM to feed temp to Gauges in Dash. __________________ Craig 1966 Chevrolet C10 - Supercharged LS3 1968 Chevrolet Camaro 1957 Chevrolet 2dr Hardtop "It makes sence if you don't think about it" Mesquite 1966 C10 - LS3 W/ Air Ride http://67-72chevytrucks.com/vboard/s...=1#post4989763

08-15-2016, 03:12 PM	#6
66ChevyMax Senior Member Join Date: Oct 2011 Location: Wolfforth, Texas Posts: 976	Re: Entropy LSX Radiator with dual fans That's a possibility but with the heat this thing runs I would prefer in to be in the block. __________________ Craig 1966 Chevrolet C10 - Supercharged LS3 1968 Chevrolet Camaro 1957 Chevrolet 2dr Hardtop "It makes sence if you don't think about it" Mesquite 1966 C10 - LS3 W/ Air Ride http://67-72chevytrucks.com/vboard/s...=1#post4989763



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