Thinking of going e-fan

***TitaniumTT*** · 02-17-2014, 07:18 AM

Hey Pete, unless I'm mistaken, there may be something inside the Rtek which will allow you to adjust the fan turn on points. Shy of that I would put a sensor BEFORE the T-stat.

Upgrade the wiring and get the biggest relay you can find. I've melted 30A relays from fans rated @ like 12 or 15A

Honestly, efans are nice, but the reliability of the stock clutch fan is tough to beat for a pretty stock application.

Pete_89T2 · 02-17-2014, 08:12 AM

The Rtek lets you repurpose the stock AWS (accelerated warm-up solenoid)output, but only as an RPM activated switch. There are no options that let you use it as a temp switch.

On the S5's, the stock aux. e-fan switch is located on the back side of the WP housing, before the T-stat, right next to the water temp sensor that the ECU uses. So sensor location is good, and as long as I can verify that the stock temp switch is guaranteed to close at temps over 207*F like it's rated to, it should work just fine.

I'm with you on the wiring part, as I would run new wiring for the fan & new relay/socket; a fan rated at 12~15 Amps might have an inrush current at 30 Amps or above.

02-17-2014, 07:18 AM	#1
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son Posts: 4,581 Rep Power: 10	Hey Pete, unless I'm mistaken, there may be something inside the Rtek which will allow you to adjust the fan turn on points. Shy of that I would put a sensor BEFORE the T-stat. Upgrade the wiring and get the biggest relay you can find. I've melted 30A relays from fans rated @ like 12 or 15A Honestly, efans are nice, but the reliability of the stock clutch fan is tough to beat for a pretty stock application. __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

02-17-2014, 08:12 AM	#2
Pete_89T2 Lifetime Rotorhead Join Date: Apr 2010 Location: Elkton, MD Posts: 874 Rep Power: 16	The Rtek lets you repurpose the stock AWS (accelerated warm-up solenoid)output, but only as an RPM activated switch. There are no options that let you use it as a temp switch. On the S5's, the stock aux. e-fan switch is located on the back side of the WP housing, before the T-stat, right next to the water temp sensor that the ECU uses. So sensor location is good, and as long as I can verify that the stock temp switch is guaranteed to close at temps over 207*F like it's rated to, it should work just fine. I'm with you on the wiring part, as I would run new wiring for the fan & new relay/socket; a fan rated at 12~15 Amps might have an inrush current at 30 Amps or above.