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Originally Posted by oilman
jimt
This is very impressive and a very elegant approach. I have already printed it out in preparation for installing it.
Before I do that, I was wondering about an alternate approach and since you have clearly done a lot of work on this, you might know the answer. What does the stock system use for temperature monitoring? Could we change the input at that side which would turn on the fans at 180 deg instead of the 210 deg it goes on now. I would think that would be an easier approach and make it more automatic.
Thanks again for sharing your hard work.
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I think that the temperature is controlled by the PCM/ECM/FCM network of computers, code, etc. I think that a starscan or equiv. would be required to change the setpoint of the temperature control system. While I think I have the skills to get into this, I don't have the equipment necessary to start poking around in the 'puters of the LX platform. (Although, I would LOVE to do just that!
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When doing my research for parts, etc. I came across this:
http://www.autospeed.com/shop/catego...svr=1034821012
Scroll down to the
Economy Adjustable Temperature Switch product about the 3rd one down.
I thought about connecting this to the Relay Control Ciruit in my mod, and having it govern the on/off of the fans using my controls.
There would be a couple of challenges though:
1. Finding a place to mount the unit (pretty simple really)
2. Finding a place for the Thermocouple on this to grab the temperature of the engine compartment/water/?? for control.
3. Without the digital readout, setting the on/off points on the temperature control would likely have to be done by trial and error.
I have NOT ordered this to play with. My initial goal for the fan mod was to keep the thing under $50. This would have put the costs over the top, but would have given in essence a secondary fan control system.
I now have 2 mods available, the simpler version costing $10-15 in parts. There are also outstanding requests for a switched "Both on Low", "One on High", and "Both on High" controls for the fans. Stay tuned
I think I found a switch that would fit that purpose as well, but I have been out of town for over a week and haven't even SAT in my 300C let alone drive it or tinker with it.
jimt <-- Having LX 300C withdrawals
