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i recently installed 05+ electric fans with a nelson performance electric fan harness and retuned the truck with fan #2 settings but the fans stay on low speed all the time even when fan temperatures have been exceeded and same thing when i turn the a/c on... anyone know how i can fix the problem? i followed the instructions that came with the harness for 03/04 installation http://www.nelsonperformance.com/fan...s-instructions
can anyone help me out thanks :D
bump for the afternoon crowd any help is appreciated
Post your tune and take a look at this:
http://www.hptuners.com/forum/showth...gs-Spreadsheet
thanks for the reply hartrod but if im not mistaken thats for 2007+ pcms. here is my file
morning bump
What thermostat do you have in it?
I looked at your tune and you have Fan1/Fan2 on temp at 170 and off temp at 165. Your truck will never run that cool....
The Nelson instructions state this:
Fan Operation stock thermostat:
Low speed ON: 200 / OFF: 198
High speed ON: 210 / OFF: 206
For 180deg thermostats, values are roughly 4degs lower than a stock stat.
Fan Operation 160deg thermostat:
Low speed ON: 182 / OFF: 180
High speed ON: 188 / OFF: 185
i tried those settings but it still stays on low speed even when i turn the a/c on. could it be a relay? im gonna try what farmtruc said . ground blue see what it does then ground green then ground both see what they do.Quote:
Originally Posted by HartRod
i finally got around to it lol well i grounded the green wire and nothing came on. i grounded the blue wire and both fans kicked on low speed. grounded both and they both still on low speed.