Activating E-Fans with Tech2
#1
Activating E-Fans with Tech2
Alrighty so I will be putting in my electric fans sometime this week hopefully, and the easiest way to activate them would be with a tech 2. I already have a tune (wait4me), but he doesnt like to answer emails and Im not looking forward to the 2 week downtime it would take to send it in. The cost of shipping will run me around $20 anyway, so if I can get it done at the dealer (tech2) for around that or less (.5 hours minimum), then I'll e happy.
The problem is, the dealership and the one other shop with a tech 2 thinks im nuts and it wont work so they wont even touch it. So, if anyone has experience with a tech 2 or has access to one and knows how to turn the electric fan option on and set the on/off temps, I would tremendously appreciate a walkthrough I can print out for them so I can get it done.
I made my harness today following this diagram:
And is this right for the on/off settings:
low:
coolant temp >202
a/c > 210
high:
coolant temp > 220
a/c > 265
Also, can they be set to turn off if I exceed 40mph with a tech2 (I know you can with hpt or efilive)? If not I can just wire in a toggle switch.
Thanks.
The problem is, the dealership and the one other shop with a tech 2 thinks im nuts and it wont work so they wont even touch it. So, if anyone has experience with a tech 2 or has access to one and knows how to turn the electric fan option on and set the on/off temps, I would tremendously appreciate a walkthrough I can print out for them so I can get it done.
I made my harness today following this diagram:
And is this right for the on/off settings:
low:
coolant temp >202
a/c > 210
high:
coolant temp > 220
a/c > 265
Also, can they be set to turn off if I exceed 40mph with a tech2 (I know you can with hpt or efilive)? If not I can just wire in a toggle switch.
Thanks.
Last edited by Atomic; 06-03-2008 at 09:21 PM.
#3
....mmk, well I have them setup manually for now with a dpdt switch in the cab...
install is here if anyone is interested: http://www.fullsizechevy.com/forums/...ml#post3286650
install is here if anyone is interested: http://www.fullsizechevy.com/forums/...ml#post3286650
#4
PT's Slowest Truck
iTrader: (19)
....mmk, well I have them setup manually for now with a dpdt switch in the cab...
install is here if anyone is interested: http://www.fullsizechevy.com/forums/...ml#post3286650
install is here if anyone is interested: http://www.fullsizechevy.com/forums/...ml#post3286650
Sorry I don't have the answers to your question though....I have read about guys using HPtuners and EFI Live, but haven't heard anything about the TechII.
#5
tech 2 wont work without a PCM out of a vehical with efans or a VCI number from GM technical support, and GM only will do a VCI number for a technical issue with a new car/truck
the VCI is where GM technical support goes in and does almost like a custom program for you and then the dealer can download the tune in TIS2web- the reflashing program for the dealer
but like i said- they wont just change software for a tune, you can energize the pcm output with it- but only for a service test, they will shut off once you exit out of the tech II screen
dont hold me to this 100%, but im a tech at a dealer, and me and a couple guys tried messing around with this for a while and it wouldnt work- i ended up with hptuners
the VCI is where GM technical support goes in and does almost like a custom program for you and then the dealer can download the tune in TIS2web- the reflashing program for the dealer
but like i said- they wont just change software for a tune, you can energize the pcm output with it- but only for a service test, they will shut off once you exit out of the tech II screen
dont hold me to this 100%, but im a tech at a dealer, and me and a couple guys tried messing around with this for a while and it wouldnt work- i ended up with hptuners
#6
Ah thanks, that was an answer I was looking for. Everyone I've asked said it cant be done, but I know there are options in the Tech2 for efans, I just didnt know what they did.
budhayes3, yea, I like switches : )
The switches on the left are for my bumper lights, reverse lights, and fans respecitvely. The 4 switches closer to the steering wheel are for my air horns, while the rocker is a master accessory on/off. I have 3 more rockers in the center under the vent for my two air compressors, and one to tie my stock horn in with my air horn.
budhayes3, yea, I like switches : )
The switches on the left are for my bumper lights, reverse lights, and fans respecitvely. The 4 switches closer to the steering wheel are for my air horns, while the rocker is a master accessory on/off. I have 3 more rockers in the center under the vent for my two air compressors, and one to tie my stock horn in with my air horn.
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