What e-fan relay did you use???? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BLUE THUNDER · 10-10-2010, 10:10 AM

I was working in the garage yesterday and decided to mess around with an electric fan I got from a 2005 Mustang. I took the positve and negative leads and connected them to my battery posts to see how much air it wld pull. Worked awsome. I remeber seeing a thread about an e-fan install and was wondering what relay and tempsensor set up was used and if it worked well?

**jaros44sr** · 10-10-2010, 08:22 PM

How's this?

need more help, just ask

dznucks · 10-12-2010, 07:29 AM

I used a Derale adjustable control unit with the screw in type temp sensor, instead of a push in, probe type.

http://www.amazon.com/Derale-16749-Adj-Ctrl-Tstat/...

snowblind · 10-12-2010, 02:13 PM

I got the cheapest relay/temp controller that Jegs had. I think it is "Perma-Cool" brand. It features a temp probe that slides into the radiator fins. It can control/power two fans up to 20amps. I use it for two 12"ers and wired the AC turn on to a switch with ignition hot so I can manually turn on the fans when I want.

Pros:
Complete kit.
Can power two fans.
Has an AC turn on wire

Cons:
All the wires, including the temp probe, are hard wired to the controller. This makes installation way more of a pain and the temp probe wire is pretty short, limiting how far from the rad you can mount the relay.

No variable speed/soft start. (Some $200 controllers feature this)

I don't like the external temp probe. Next summer I want to run an actual rad coolant temp sensor but since the probe is hard wired I think I need a whole new unit.

AJs72K5 · 10-12-2010, 05:15 PM

Mario - I have a Flexalite controller that I'm going to sell soon. Pretty sure its this one --> LINK

PM me if you want more info.

EDIT: added link.

Posted via Mobile Device

packers05 · 10-12-2010, 07:33 PM

I bought a sending unit from summit that provides ground from 185 on 170 off and I used a relay for a pt cruiser and pigtail from junkyard it works great

mcmlxix · 10-28-2010, 01:43 AM

Quote:

Originally Posted by packers05

I bought a sending unit from summit that provides ground from 185 on 170 off and I used a relay for a pt cruiser and pigtail from junkyard it works great

Do you have a PN for the sending unit?

10-10-2010, 10:10 AM	#1
BLUE THUNDER Registered User Join Date: May 2007 Location: San Antonio Posts: 993	What e-fan relay did you use???? I was working in the garage yesterday and decided to mess around with an electric fan I got from a 2005 Mustang. I took the positve and negative leads and connected them to my battery posts to see how much air it wld pull. Worked awsome. I remeber seeing a thread about an e-fan install and was wondering what relay and tempsensor set up was used and if it worked well?

10-10-2010, 08:22 PM	#2
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,766	Re: What e-fan relay did you use???? How's this? need more help, just ask __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 10-10-2010 at 08:23 PM.

10-12-2010, 07:29 AM	#3
dznucks Registered User Join Date: Feb 2006 Location: Smyrna, Ga Posts: 1,647	Re: What e-fan relay did you use???? I used a Derale adjustable control unit with the screw in type temp sensor, instead of a push in, probe type. http://www.amazon.com/Derale-16749-Adj-Ctrl-Tstat/...

10-12-2010, 02:13 PM	#4
snowblind Registered User Join Date: Oct 2009 Location: SLC, Utah Posts: 164	Re: What e-fan relay did you use???? I got the cheapest relay/temp controller that Jegs had. I think it is "Perma-Cool" brand. It features a temp probe that slides into the radiator fins. It can control/power two fans up to 20amps. I use it for two 12"ers and wired the AC turn on to a switch with ignition hot so I can manually turn on the fans when I want. Pros: Complete kit. Can power two fans. Has an AC turn on wire Cons: All the wires, including the temp probe, are hard wired to the controller. This makes installation way more of a pain and the temp probe wire is pretty short, limiting how far from the rad you can mount the relay. No variable speed/soft start. (Some $200 controllers feature this) I don't like the external temp probe. Next summer I want to run an actual rad coolant temp sensor but since the probe is hard wired I think I need a whole new unit. __________________ Matt '72 Jimmy Build

10-12-2010, 05:15 PM	#5
AJs72K5 Registered User Join Date: Nov 2007 Location: South Tx Posts: 1,083	Re: What e-fan relay did you use???? Mario - I have a Flexalite controller that I'm going to sell soon. Pretty sure its this one --> LINK PM me if you want more info. EDIT: added link. Posted via Mobile Device __________________ - AJ Gray Matter Build - 1972 K5 with some stuff Last edited by AJs72K5; 10-12-2010 at 09:10 PM.

10-12-2010, 07:33 PM	#6
packers05 Registered User Join Date: Feb 2009 Location: minonk illinois Posts: 224	Re: What e-fan relay did you use???? I bought a sending unit from summit that provides ground from 185 on 170 off and I used a relay for a pt cruiser and pigtail from junkyard it works great



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