New Member Fan Control Question.

[stealthGXP]

New to tuning but cautiously excited.. I have an 07 Grand Prix GXP (5.3). I just tuned out the DOD/AFM and noticed car running at higher temps. Not at any danger level but after doing research would like to adjust fan control to achieve lower temps. So, I attempted to adjust fans to 192 at about 50% and now they don't seem to kick on at all as they used to when reading was at half gauge. So, my question is, do I need to switch to a lower temp t-stat? Am I wasting my time trying to adjust fan control with the stock t-stat? Thanks for any assistance!!

[mikel]

a cooler stat will help for sure, also, we already modify the fan settings to come on sooner with the preloaded tunes.

[stealthGXP]

Great thanks. So, until I get a lower stat, I should set the fan control back to where it was, or set to previous tune?

[mikel]

cant hurt.

[techntrek]

See my thread about setting fan settings, the percentages are largely useless for older vehicles, only the newest use PWM to control the fan speed continuously. I still need to run tests to see which percentages correspond to the low and high fan speeds (and for a few model years, a medium setting). I saw 95% for 235 F so I've set all of my temps starting at 214 F to 95% for towing.

[stealthGXP]

tech... I went back and read through your posts about the fan temps. That was exactly what I was hoping to learn about the tuner!! Thanks for all of your info, I now have a good idea of hot to adjust the settings to achieve cooler temps!! Thanks again!!

[techntrek]

Glad to help. I've been insanely busy the last 3 months so hopefully I'll get some down time next month so I can run some tests. I need to wire up some indicator lights to the relays so I can tell when the low and high fan settings have been activated by the computer, then start modifying the fan settings.

[flyingfool]

i installed a 160 t-stat and need to bring the fan temp down to atleast 170, but havent purchased a tool yet, can i have tthe diablo adjust lower than 185

[06MonteSS]

you can not change the temps at which the fans run at.. you can only change the amount of power that they run at, at preset temps.. starting at 192* and up...

for example, if you set the fan power at 192* to be running at 50%, then the fans will run at 50% power for 192* and also anything lower, even though you can't directly set it for anything lower..