Change cooling fan temperature switch points
I see a lot of discussion about managing engine temperatures. To me it seems that many issues would be resolved if the fans would just kick in a little earlier. 160 degree thermostats is no help in stop and go traffic if the fans kick in at the same high temperature.
Has anyone tried to change the fan switch points in the engine controller - DME? Seems like this should be no more difficult than changing the redline rmp etc. |
I have asked the same here before without success. I guess the solution is to re- program the computer. Noticed that with AC on, engine temp is generally lower when driving at lower speed due to the fans in low speed. Not perfect but helps a bit.
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I think a better way would be to have a manual switch to activate the fan.
Take a look at post number two by Qmulus in the below thread. I have considering doing this numerous times..... if I could only identify where to "In a convenient place cut the yellow/gray wire from DME to the high speed fan relays". http://986forum.com/forums/boxster-racing-forum/56306-manual-radiator-fan.html |
What issues?
Solutions looking for problems seems to me. |
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To the best of my knowledge, the temp settings can't be reprogrammed in the ECU. Thus, others have installed a manual switch. I am testing out a manual switch for the engine bay fan (passenger side rear fender) this afternoon and if it works, I'll post up the details for that one. |
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Nice mod......really want this for dealing with being stuck in traffic .....I imagine having having the fans running while moving at speed would improve cooling air flow as well.
Anybody have a idea which stock switch might give a SPST configuration? Maybe wiring diagrams show this. It would be nice to package this switch in the batwing andlook stock.....maybe a repurposed seat heater switch |
Jay - the OEM switches are all momentary, meaning only active while being pressed. You'd have to hold it. :)
That, or get a bit more complex with the setup. |
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Has anyone considered the OBDII connector and sending the right signal to the computer.
The Durametric units can turn the fans on and off and set the fan speed. Perhaps this is another OBDII Arduino Hack candidate. |
just turn your ac on . thats what i do in the heat and traffic .
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So doing this would negate the need for installing manual switches as triggering the Ac on will now put the fans on high right of the bat? I can't picture the jumper arrangement as yet or downsides......it's late though! |
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I did this because my car sees a lot of track time in 95d+ ambient temperatures. I'll admit that I think i need some indicator LED's somewhere since I can't always hear when they're on, if the engine is running. Sent from my SM-G970U using Tapatalk |
Sounds like a great set up any details on the equipment you used? I have seen many remote exhaust valve actuators but not any remote controlled contacts
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https://www.amazon.com/dp/B07MTYGJHQ/ref=cm_sw_r_cp_apa_i_kxyqFbH272GHH Sent from my SM-G970U using Tapatalk |
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