SR8 radiator fan

[parsonsj]

As I continue my journey of getting this old SR8 ready for the track, the latest obstacle is the radiator fan (located on the left of the chassis in front of the left rear tire). The issue is that the fan doesn't come on at 88*. In fact, it doesn't come on at all.

I've verified all the wiring, all the way to pulling the 85 leg of the fan relay to ground and having it come on. The 85 leg of the relay is connected to the F88 (pin 32) and it has continuity.

So -- I'm left to guess that maybe my model year (2007) doesn't have fan support? Perhaps I've got a later model loom with the relay but the ECU just doesn't pull the relay to ground? Anybody have any experience with SR8 radiator fans?

jp

[parsonsj]

I've not found a solution, so I've installed a switch so I can turn the fan on and off manually. I'll have to keep an eye on temps, but I'm hoping I won't need to run the fan when on track.

[parsonsj]

That sounds promising... how would I go about getting it "activated" ?

thanks!

[parsonsj]

I talked to Spring Mountain about this, but they couldn't help. I guess I'll see if I can get Radical on the phone. I've got a track weekend coming up, and perhaps I could send it in after that.

[parsonsj]

splitpin said:

One of Radical's Main Dealers in the Americas and they can't help?!

No... they are off digging up the wiring diagrams for me, but it's pretty simple wiring. I don't know for sure, but I think they send ECMs to the factory for any re-programming.

[parsonsj]

Yes, I know of similar products. I installed this one ( http://dccontrol.com/constant_temperature_controll... ) on a 69 Camaro that came into the shop this past week.

I was hoping for ECM control, but something from the aftermarket might be the better choice. Thanks for the nudge.