Unreal

Once you are moving past ~35 or 45mph fans are turned off. So wiring in fans to be on wouldn't do anything. They are restriction once you hit those speeds. Now if you wanted a switch to just turn them on high when you are not moving or stuck in traffic then buy a relay and wire it in but you wanted something for driving hard and I would assume driving hard means keeping the car in motion.

wolf8218

Ah ok. I understand your answer and I should rephrase my question.

I would like to be able to provide full power to the fans while stopped in traffic or between runs, as well as fix the design flaw.

So I should run a manually switched/thermostat relay ground to the starter or battery?

realcanuk

I do this using the Casper fan switch with no problems. Works great.

WHITE_SHARK

I'm confused now with the multiple options and the original poster where Haltech ECU should be part of the game.

So for any C6 with factory PWM module, he can use the painless kit only and he can adjust the tune to %100 fan desired,, then he will run the fan at its max power and he will be hear it?

the other option is to purchase the casper fan switch, and you will have a switch to run the max power of the fans?
Am I correct??

I'm running hot with dual fan upgrade and dewitts radiator,, the damn intercooler and hot weather here is not helping at all

Unreal

Run it to the alternator or battery, whatever is easier.

Your just using the ecu or a thermostat switch to trip a relay to give the fans full power. So they will be on/off not adjustable. Heck, just to test it you could wire them up direct and just drive around/idle and see if it fixes any issues before going deeper if needed.

WHITE_SHARK

Ok thanks,,, so the wires will not ended up burned or something because of running them at max power/current ?

Unreal

As long as you use the correct gauge and connections it shouldn't. They will only draw whatever they can take unless their is a short or something.

realcanuk

I really think the Casper switch is the best route. It allows you to run the fans at full or half speed and it just connects into the factory wiring with no issues. I have run mine at the track at full speed for long periods of time and have never had problems with the plug heating up or burning, as some do.

SteveDoten@ARH

Great info.

BADZ

It looks like if you just use larger gauge wiring and the solid state relays per fan (proper ground and hot) then you will achieve full power of your fans. With the stock setup you could not achieve this because of GMs restrictions and smaller gauge wiring with crappy plugs burning up/melting since the fans were being programmed to run at longer periods of time.

383

Me too, but Ill be keeping an eye on the plug now that I know there has been problems

ANGRY Z

In case anyone was looking for this...

camirocz

Thanks for sharing Doug.As usual the top Corvette guy solves the problem.

Pitufina

I was hoping bthat someone would post a pic of how they wired the relay using the ecm control.

dennis50nj

I have been running the Cartek fan module for over 8 years, it makes the fan come on at start up then when it reaches 120 it shuts down and comes back on at 181 100% then goes down to 178 shuts off then back on at 181, I have run 5 back to back hot laps in a mater of minutes and still 181 at the starting line on each pass with around 500 rwhp NA and thats taking it to 7200 on the ship rpm

Thomasmoto

I want to just run the stock fan between rounds at the drag strip. Is there a simple way to put a switch somewhere? Back when I used to race turbo Buicks there was a ground on top of the intake that was very easy to just put a switch to a ground and it would run as desired.

jon6.0

I believe that's what the Caspers or Cartek kit does.

jon6.0

I need to look at my wiring. I have a Dewitt's cut down radiator and dual fans. I hit 245F stuck in Phoenix traffic(106F outside) the other day with the AC on. I did have the upper shroud off, but I wouldn't think that would matter in stop and go traffic.

Thomasmoto

Your temp got to 245 and it didn't do any damage and your a/c was still working?

Unreal

I've seen 255-260. 245 isn't that bad, car isn't happy though.

Welcome to low compression blower *******ess with cut down radiator and fans. I think stock radiator/fans cool better than the combo we have. Shroud won't make much if any difference.