...

Go Back   Lateral-g Forums > Technical Discussions > Cooling: Radiators/Fans/Controllers
User Name
Password



Reply
 
Thread Tools Display Modes
  #401  
Old 09-26-2016, 05:06 PM
andrewb70's Avatar
andrewb70 andrewb70 is offline
Lateral-g Supporting Vendor
 
Join Date: Jul 2005
Posts: 851
Thanks: 209
Thanked 441 Times in 200 Posts
Default

Quote:
Originally Posted by dontlifttoshift View Post
Doing a Connect and Cruise LSA. Is it confirmed that I can _not_ control the fans with PWM with a GMPP E67?
JP and I have discussed this quite a bit. When he was doing the white LS9 Camaro he had to do all kinds of BS to get it to work. He called GM and got some unclear information and was told PWM is not possible on the GMPP harness kits. This is in contrast to Scot's experience, but Scot's kit is much older.

I suspect at some point GM changed the firmware/OS (pure speculation) to render PWM not functional. JP ended up getting a used E67, refreshing it with a Corvette LS9 OS and was able to make it work.

Hopefully JP jumps in here to clarify, but that's my recollection.

Andrew
Reply With Quote
  #402  
Old 09-26-2016, 05:12 PM
dontlifttoshift's Avatar
dontlifttoshift dontlifttoshift is online now
Senior Member
 
Join Date: Oct 2012
Location: Beach Park. IL
Posts: 928
Thanks: 10
Thanked 168 Times in 100 Posts
Default

Yeah, that's what I read, I was hoping that maybe it was just a Florida problem. Trying to make this install as OEM as possible and thought it would be a nice touch.
__________________
Donny

Support your local hot rod shop!
Reply With Quote
  #403  
Old 09-26-2016, 05:15 PM
andrewb70's Avatar
andrewb70 andrewb70 is offline
Lateral-g Supporting Vendor
 
Join Date: Jul 2005
Posts: 851
Thanks: 209
Thanked 441 Times in 200 Posts
Default

Quote:
Originally Posted by dontlifttoshift View Post
Yeah, that's what I read, I was hoping that maybe it was just a Florida problem. Trying to make this install as OEM as possible and thought it would be a nice touch.
Donny,

Presumably this is for a customer, in which case I would encourage you to make this work for him/her...It really makes for a much nicer driving experience. It may be a Florida problem, so you should try it out for yourself.

Andrew
Reply With Quote
  #404  
Old 09-26-2016, 09:17 PM
samckitt's Avatar
samckitt samckitt is offline
Senior Member
 
Join Date: Dec 2005
Location: Carrollton, VA
Posts: 348
Thanks: 1
Thanked 15 Times in 9 Posts
Default

Scot's kit is much older? Scot me? What kit is older? My GMPP controller kit? How do I find how old it is?

Yes I'm running the fan through a PWM control box from a GMPP LS3 controller. Friend of mine is also. Had to add some wires to the harness, and reprogram ECM for it.
__________________
Scot
86 Monte SS
LS2/T56 Magnum
Reply With Quote
  #405  
Old 09-26-2016, 09:28 PM
andrewb70's Avatar
andrewb70 andrewb70 is offline
Lateral-g Supporting Vendor
 
Join Date: Jul 2005
Posts: 851
Thanks: 209
Thanked 441 Times in 200 Posts
Default

Quote:
Originally Posted by samckitt View Post
Scot's kit is much older? Scot me? What kit is older? My GMPP controller kit? How do I find how old it is?

Yes I'm running the fan through a PWM control box from a GMPP LS3 controller. Friend of mine is also. Had to add some wires to the harness, and reprogram ECM for it.
I recall you saying that your kit is from around 2010...I could be wrong in my recollections...

Mine is from 2008 but I have not tried to implement PWM on my GMPP kit.

Andrew
Reply With Quote
  #406  
Old 09-27-2016, 05:59 AM
samckitt's Avatar
samckitt samckitt is offline
Senior Member
 
Join Date: Dec 2005
Location: Carrollton, VA
Posts: 348
Thanks: 1
Thanked 15 Times in 9 Posts
Default

I bought mine Round 2010/2011 from another member here. It was still new in box, but not sure how long it sat on the shelf.

Can the full OS on the ECM be reprogrammed from HP tuners vs just tuning it?
__________________
Scot
86 Monte SS
LS2/T56 Magnum
Reply With Quote
  #407  
Old 09-27-2016, 07:19 AM
dontlifttoshift's Avatar
dontlifttoshift dontlifttoshift is online now
Senior Member
 
Join Date: Oct 2012
Location: Beach Park. IL
Posts: 928
Thanks: 10
Thanked 168 Times in 100 Posts
Default

Andrew, I agree, it's the only way to fly. I just finished a car and we ran the fan PWM, ac pressure sensor and everything, but that was with a Speartech harness and E67.

I just don't want to start from scratch with the rest of the tune if we have to reflash another ecm. Further complicating the situation is fact that this an Erod crate engine and must pass emissions when it lands in California.
__________________
Donny

Support your local hot rod shop!
Reply With Quote
  #408  
Old 09-27-2016, 06:40 PM
mikels mikels is offline
Senior Member
 
Join Date: Apr 2006
Posts: 114
Thanks: 1
Thanked 34 Times in 9 Posts
Default

Quote:
Originally Posted by andrewb70 View Post
JP and I have discussed this quite a bit. When he was doing the white LS9 Camaro he had to do all kinds of BS to get it to work. He called GM and got some unclear information and was told PWM is not possible on the GMPP harness kits. This is in contrast to Scot's experience, but Scot's kit is much older.

I suspect at some point GM changed the firmware/OS (pure speculation) to render PWM not functional. JP ended up getting a used E67, refreshing it with a Corvette LS9 OS and was able to make it work.

Hopefully JP jumps in here to clarify, but that's my recollection.

Andrew
While there has been several 'releases' of calibrations for the LS crate engines, the software has remained the same.

So enabling PWM fan control is matter of wiring properly and enabling in calibration.

Dave
Reply With Quote
  #409  
Old 09-29-2016, 10:42 AM
samckitt's Avatar
samckitt samckitt is offline
Senior Member
 
Join Date: Dec 2005
Location: Carrollton, VA
Posts: 348
Thanks: 1
Thanked 15 Times in 9 Posts
Default

Somewhere in this thread is the pinout for the E67 with callout on which spots to add wires & pins to for the PWM functionality. I have the full pinout chart if anyone wants it. I also have a PDF with instructions on how to disassemble the ECM connectors.
__________________
Scot
86 Monte SS
LS2/T56 Magnum
Reply With Quote
  #410  
Old 10-02-2016, 12:13 AM
vannatta20 vannatta20 is offline
Member
 
Join Date: Aug 2008
Location: La Monte, MO and Las Vegas, NV
Posts: 90
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Anyone have any luck getting PWM output from an E38 ecu with a camaro OS? No matter what settings I use it will not output a signal. If I use a truck OS I get a PWM signal easily. The truck OS does not see AC pressure. The car OS does. This is why I need to use a car OS. I used an oscilloscope to verify
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 05:04 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright Lateral-g.net