ls1 fans question.
#1
TECH Apprentice
Thread Starter
iTrader: (1)
Join Date: Aug 2004
Location: Marilla, NY
Posts: 312
Likes: 0
Received 0 Likes
on
0 Posts
ls1 fans question.
I did some searching and could not come up with what i was looking for. I am having a problem with my ls1 fans not working correctly. I have them hooked up with a nelson harness. Now the problem i am having is that, everything works correctly, but the fans will not turn on via the pcm. I have had it tuned for this as well. I checked all the relays and they seem to be ok. Will a bad relay cause this to happen, even tho the fans turn on with the a/c and or the override switch? I am beginning to believe the tuner might not have done it correctly. When u change the settings in HPT do you have to actually activate the pin #, or can you just put in the fan temps in the fans menu and thats it? By the way the pin is seated all the way in the plug.
#2
TECH Fanatic
iTrader: (3)
Originally Posted by blksilverado
I did some searching and could not come up with what i was looking for. I am having a problem with my ls1 fans not working correctly. I have them hooked up with a nelson harness. Now the problem i am having is that, everything works correctly, but the fans will not turn on via the pcm. I have had it tuned for this as well. I checked all the relays and they seem to be ok. Will a bad relay cause this to happen, even tho the fans turn on with the a/c and or the override switch? I am beginning to believe the tuner might not have done it correctly. When u change the settings in HPT do you have to actually activate the pin #, or can you just put in the fan temps in the fans menu and thats it? By the way the pin is seated all the way in the plug.
#4
TECH Fanatic
iTrader: (3)
Originally Posted by Quik
they are actually easy to turn on. you pcm is similar to mine as you just set the fans to 2 fans and set the proper temps
#7
On The Tree
iTrader: (2)
Join Date: Apr 2007
Location: Chapmansboro, TN
Posts: 156
Likes: 0
Received 0 Likes
on
0 Posts
In HPT you set the fan type (no fans, aux fans, 2 fans), the fan temps, and the A/C enable/disable speeds. This is what my 2002 tune has available. It makes no difference whether you select "aux fans" or "2 fans". Both settings will enable pin 42. Neither setting will enable a second pin for high speed fans - you will still need to connect to the A/C system.
Trending Topics
#8
TECH Apprentice
Thread Starter
iTrader: (1)
Join Date: Aug 2004
Location: Marilla, NY
Posts: 312
Likes: 0
Received 0 Likes
on
0 Posts
thanks for the responses.. i donno, maybe i'll just buy 3 new relays and see what happens. From what i seen the tuner do, i remember he set them for 2 fans and put in the temps. I guess thats not the problem then. I'll have to email him and find out. thanks again guys
Thread
Thread Starter
Forum
Replies
Last Post
Wrecker 426
Tuning, Diagnostics, Electronics, and Wiring
1
09-30-2015 09:39 PM
FormulaZR
GM Engine & Exhaust Performance
1
09-14-2015 05:23 PM