PWM radiator fan controller

[1989GTA]

I would recommend going with the C6 setup if you haven't bought anything yet,as long as you have a computer capable of controlling it.



I like the Derale, but I am not happy how much lack of room there is to wire it, and to get to the adjustment, it is impossible to adjust when the car is running.

I do have the E38 ECM and it is pwm capable I have the 2011 Corvette program already loaded into it. I will look hard at the C6 PWM setup. I have HP tuners so the tuning aspect is not a problem. I was already thinking of a 70 amp relay if I went with the Derale setup. You just confirmed that would work. So let me look into what parts I will need for the C6 route. The only tricky part would be the "trinary" switch. I have an "Old Air" setup on the car now so I would have to come up with a solution to that little problem.

[Samckitt]

What PCM is with the GMPP LS2 controller kit? It has provisions in it for the pwm fan controller. That's what I have. Maybe it is an E38.

Finally.

I bought a salvage yard E67 off a V6 Malibu, sent it to a fellow in Austin TX who flashed a 2013 ZR1 OS on it, picked up a special copy of HP Tuners (2.25.xxx, still in beta), and copied my tune from the crate motor tune, and wrote the calibration out.

Voila, PWM fans.

Finally.

Geez, what a bunch of walls to knock down!

Net: The GMPP crate motor E67 OS does not and can not support PWM fans or AC pressure sensors. You have to use a late model passenger car E67 or E38 and OS, and deal with all the extra equipment implied in that. I've got a bunch of work left to delete all the DTCs that don't apply, plus puzzle out all the differences in the tuning tables.

[Samckitt]

I do have the E38 ECM and it is pwm capable I have the 2011 Corvette program already loaded into it. I will look hard at the C6 PWM setup. I have HP tuners so the tuning aspect is not a problem. I was already thinking of a 70 amp relay if I went with the Derale setup. You just confirmed that would work. So let me look into what parts I will need for the C6 route. The only tricky part would be the "trinary" switch. I have an "Old Air" setup on the car now so I would have to come up with a solution to that little problem.

I went to the junk yard & found a couple switches, I cut the hard line a few inches on either side to have installed in my system. AC guy near me can take the screw in base & solder them onto an elbow.



I had previously purchased the connector & pigtail from EFI Connection & it plugs into this switch.

Here is the pigtail:
https://www.eficonnection.com/home/p...nector-pigtail

[andrewb70]

What PCM is with the GMPP LS2 controller kit? It has provisions in it for the pwm fan controller. That's what I have. Maybe it is an E38.

As far as I know all GMPP kits use the e67 ECU for the Gen IV engines. I have a feeling that GM made some changes and the earlier kits support PWM, while the later ones don't. I need to dig into my GTO and see if I can make this happen. I got my GMPP harness back in 2008, which is shortly after they released it. I got the LS7 kit and later had it tuned for my L92/LS7 cammed engine.

When did you get your kit Scot?
Andrew

[Samckitt]

As far as I know all GMPP kits use the e67 ECU for the Gen IV engines. I have a feeling that GM made some changes and the earlier kits support pwm, while the later ones don't. I need to dig into my GTO and see if I can make this happen. I got my GMPP harness back in 2008, which is shortly after they released it. I got the LS7 kit and later had it tuned for my L92/LS7 cammed engine.

When did you get your kit Scot?
Andrew

I got it between 2011-2013 from someone on either here or Lat-G. It was new, never installed, but "used".

[blown69nova]

Does anyone have 2 spare 478-23124472620060 "large terminals" for the connector? My brother is installing the corvette fan module and this conn. is on backorder from mouser (18 weeks). I have 2 extras from my build.
Thanks, Steve
[email protected]

[andrewb70]

Does anyone have 2 spare 478-23124472620060 "large terminals" for the connector? My brother is installing the corvette fan module and this conn. is on backorder from mouser (18 weeks). I have 2 extras from my build.
Thanks, Steve
[email protected]

Steve,

Damn, I just sold a complete kit to someone that had a similar issue with the Mouser backorder. It would be nice to find another vendor for these parts...

Andrew

[blown69nova]

A kit would have been nice, thanks anyway.
Steve

[Samckitt]

I have a few kits left that has the connector body, all terminals, & seals. I was selling them for $50 each before Mouser had them available. I had to get them from over seas, & had to buy a bunch to make shipping reasonable. Willing to lower price, but want to sell them as a kit, make me an offer.

[Fuelie Nova]

I will look when I get home tonight. I think I do, if so they are yours for the shipping cost.
Tom

[blown69nova]

Thanks, let me know.
If you don't have the terminals fuelie, I'll take a whole kit, samckitt. $35.00 + shipping?
Steve

[TBART70]

I would like one just in case I throw the Derale in the street and run it over with my truck. Will pm tonight.

[Samckitt]

Thanks, let me know.
If you don't have the terminals fuelie, I'll take a whole kit, samckitt. $35.00 + shipping?
Steve

That'll work. Paypal?

[blown69nova]

Samckitt, before their gone, I'll take one kit.
Steve

[blown69nova]

Paypal is good for me.
Steve

[Samckitt]

I'll look again tonight & see how many sets I have.

[blown69nova]

Thanks

[blown69nova]

Anybody find anything?

[Samckitt]

I checked this morning, I have enough for 5 kits.

[Fuelie Nova]

I have a total of three big pins left but if you are going to buy a kit I will just keep my pins for spares
Tom