Quote:
Originally Posted by toyotaspeed90
the relay is turned on by the COR...... which turns on when the key is set to on, not necessarily when the engine is running. It turns on when the temp reaches where it should.
the sensor is not a switch style sensor.... strangely enough, even though the technology was there for a switch style thermistors, this one isn't.... it's a true thermistor (I know this because I had to use one as an intake sensor on a JDM gze). Also, I doubt there's a timer built in as there's no need for one.
so, if you had read what I said correctly.... it can turn on when the key is set to on... I did NOT mention engine bay temp.
Further, if you all want to go on about this.... there is little that the side vent does at above 35mph..... aerodynamics of the car make it somewhat useless.... the lower plastic covers (and the vents in the engine lid) are meant for air movement to go from under the car to up through the engine bay. So, for anyone wanting to add a fan to the engine lid for whatever reason, wire it as a puller.
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Yeah, I get the whole useless above 35mph thing.. worth mentioning though... I always thought that was a cooling fan more for if you are sitting in slow traffic or at idle on a hot day anyway... I wouldnt imagine it would ever get over 158 above 35 mph in the engine bay anyway with the airflow there.
and Yeah, I understand now what you are saying when you mean it will "turn on." I was interpreting you to mean all you have to do is turn your key on, and the fan runs (all the time). Which is a failsafe situation. But it sounds like you mean, the circuit is on.
I couldnt remember about the accuracy of my "timer" statement, and took a quick look at a BGB and all it says is that the fan comes on for a sec during ignition (as you indicated) but immediately shuts off if the sensor reads under 129 degrees and turns on if its reading over 158 (not 168) degrees.
As far as the timer part, the BGB doesnt state anything that I found easily, but I recall getting that info (right or wrong) from another forum (dont believe everything you read right) and as the cooling fan computer behind the ecu is what monitors the sensor/thermistor... could it not act as the "timer" and not trigger the fan on unless it gets a constant reading for a specific duration?
Makes me want to have some extra status indicator lights... rad fan , engine fan , and tvis.
