I am getting some LS1 fans this week, and I wasn't sure on where to get a VSC (variable speed controller). There is a flex-a-lite VSC like the one in this article: LS1 Fan Install but i'm not sure where to get it.
The reason I don't want to hardwire it to the PCM is because it is my daily driver, so when I have to send my computer off to be re-tuned I use my stock computer and I would like the fans to work all the time, not just when my tuned PCM is in.
Any help is appreciated! Thanks!
2004 RCSB lowered 2/4 with boss 330 22" black wheels. 4.8 w/ Pacesetter LTs, ORY, 3" cutout, K&N 77 intake, 224/224 on 112 Lunati cam, 160 t-stat, W4M tune.
well you can do several things really, if you dont want it to run off of the pcm.
My first suggestion is to use a VSC, it still uses a temperature probe, that goes through the radiator, but is slightly inaccurate.
The next thing you could do is just make your own harness, using several relays and keep the fans on low, or high, or whatever you want all the time.
I would at least use a VSC or a harness of some sort that runs off of the temperatures in the vehichle, because then the fans wont be on constantly.
Or you can just buy a Nelson fan harness and install it. Have your tuner turn on PIN 42 and you are set. If you absolutely need to, you can wire in a toggle switch from the battery to the fans until your harness and tune get to you...
2000 ECSB 6.0L
TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
so all he has to do is turn on pin 42? it will still work with high/low settings and with the AC/temperature perfectly?
2004 RCSB lowered 2/4 with boss 330 22" black wheels. 4.8 w/ Pacesetter LTs, ORY, 3" cutout, K&N 77 intake, 224/224 on 112 Lunati cam, 160 t-stat, W4M tune.
Yup, sure will. Well, you have to tell the tuner that you are getting efans and he will take care of the rest, hopefully reconfiguring a few settings and turning on PIN 42. The harness is just like factory--it installs easily and there is a pin for hole #42 on the PCM and you pin it yourself. Pretty easy. The PCM will tell the fans to come on--at whatever temp the gauge reads, if the A/C is on, 60% load or 100% load. Its all programmed into the PCM.
2000 ECSB 6.0L
TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
Thank you for the information! You really helped out a lot. I have one more quick question, would having the PCM tuned for the fans even if they weren't installed yet have any negative effects?
2004 RCSB lowered 2/4 with boss 330 22" black wheels. 4.8 w/ Pacesetter LTs, ORY, 3" cutout, K&N 77 intake, 224/224 on 112 Lunati cam, 160 t-stat, W4M tune.
Absolutely not , has no effect , the pins (33, 42) are grounds anyways .Originally Posted by chevykid
Now what is a tune again?
Comp Cam 54-412-11 , Int:265, 212, .522 , Exh: 271, 218, .529 , LSA 114 , Longtube , CAI (Vararam) , TransGo HD2 shift kit , tuned by me with EFILive
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