02 electric fan conversion

[Rayola88]

So i just did the swap from an 05 silverado cooling fans n last night when installed they worked perfectly now today fans are not kicking on? Any suggestions

 

[Rocket Man]

Relays or fuses? Did you have the pin in the PCM turned on?

 

[Rayola88]

So i figured out the problem my ground wire wasn't grounded to a good ground... smh... also had another question, so i did the swap that scottyboy posted but only one fan turns on but i want both fans to turn on to be cooler at idle anyway to go about that?

 

[Rayola88]

Also yes already had it tuned

 

[Tonyrodz]

Man, I've been trying to find a guy around me to turn the fans on through my pcm, I can't find one to do it! What harness did you use?

 

[Rocket Man]

So i figured out the problem my ground wire wasn't grounded to a good ground... smh... also had another question, so i did the swap that scottyboy posted but only one fan turns on but i want both fans to turn on to be cooler at idle anyway to go about that?

They are controlled by the PCM but I'm not sure if a tuner can change that. I know they can change the turn-on temps. There's several modes- one on low, both on low, both on high, etc.

 

[M1Gunner]

If the one fan is cooling your engine efficiently according to your gauges or better yet l live data and it's not overheating then you should let it be. Too cool of an engine temp will make you run rich and your gas mileage will decrease. Also if you live in a state with emission regulations it could effect you but that's far end worst case.

More is not always better
Lower engine temps... not better
Higher oil pressure... not better
Higher fuel pressure... not better
Etc.

 

[M1Gunner]

Man, I've been trying to find a guy around me to turn the fans on through my pcm, I can't find one to do it! What harness did you use?

What year and why can't you operate the fan through a signal from the pcm?

 

[Rayola88]

So i went with the factory fans off a 05 silverado and the factory harness off an 05 as well, go to a junkyard that way the harness will be easier to pull off, make sure you you pull everything off thats mine after everything was cut down i pulled all the way from the cooling fan junction box to the cooling fans

 

[Rayola88]

M1 yea your prolly right im gonna let it ride n see how It goes everything is in working condition, the truck runs a lot better, a lot colder it was a good fairly easy conversion thanks again m1 for the input