skanj0 wrote:
brirene wrote:
I could use a copy of the 4th grade explanation too! :) Guess my concern is that you're putting a bandaid on it. Hopefully the pump will solve your problem, or even throwing bpd coolers on it, which should definitely address the issue. That would eliminate the need for the fan switch, and address the causal problem. Other than being nice to cool it even further at times, what am I missing?
My experience thus far is that the OEM fan control strategy has the fan ramp-up rate starting too late. When pulling a grade with a load in hot weather the fan strategy has it ramping-up at about 215f ECT. In many trucks, and those with BPD oil coolers, the EOT would be even hotter. I have found that it is easier on the truck to preventitively engage the fan early and "hold the temps down" than it is to allow the default fan strategy to work and then watch the fan struggle to hold ECTs/EOTs - much less reduce them much.
My friend has the exact same truck as mine as has the BPD oil cooler. He is currnetly working with BPD to troubleshoot high oil temps when towing, as on a recent trip his EOT was much higher than mine, and I dont have the BPD oil cooler (yet). He purchased and installed his BPD oil cooler earlier this year, just before BPD released the heavy duty cooler option. He is now working with BPD to exchange the standard cooler for the heavy duty cooler. In the event that still doesnt bring his EOTs down enough when towing, we are also installing a manual fan switch in his truck this weekend. We will be using Upfitter switch #1 and a relay as I describe above.
Your tuner if you have tunes can turn the fan on @ a temp you desire.
