jschrauwen wrote:I personally would not circumvent the natural triggering system to initiate the rad fan from comming on. Find out the source of that problem and get it sorted. I would turn to the 2 (black and green) thermosensors located by the coolant filler neck and verify their serviceability.
I would also verify the integrity of the rad and confirm that their are no blockages in there since those are the smallest galleries for coolant to travel through.
Not sure how you accomplish a system flush. My method is to go to crappy tire (since you live in CA) and get a coolant line interconnect for flushing purposes. This is a clay coloured plastic "T" that is placed in the middle of the coolant return line from the interior heater core and just before the thermostat housing. I have done a previous post as to this procedure. Remove thermostat from housing and reconnect the thermostat housing. Open drain plug on the bottom of rad. Plug coolant lint to coolant reservoir (white plastic container). Attach garden hose to plastic "T" and turn on tap. Ensuring all caps are on, water should flush all coolant and anything else out through the rad drain plug. The higher the pressure the garden hose the better. Usually home water pressure is no more than 60 -70 psi, so it's completely safe. Once the water exiting the rad is turned to clear you obviously have removed all coolant. The pressure at which the water is exiting the rad in relation to the water pressure from the garden hose should give you some sort of an indication as to whether there may be a blockage or restriction. Normal procedures to refill and pressurize.
I don't recall you saying that any leaks were noticed at or by the water pump. Leaks are the first indicators that the water pump is not long for this world and I can't see replacing the water pump on spec.
Addressing the items I specified should be more than enough to zero in on the deffective parts/condition. Hope this helps.
I'm not leaving the fan hooked up direct forever, just until i find out what the problem is and if it is JUST the fan.
As i've said i've flushed the system a NUMBER of time already, i followed what was in my mx-3 mannual that i bought *shrug*
What i've been ASKING for is a diagram showing all the sensors and wiring for the ZE dealing with the fan...i have yet to get one and i really really need one.
I've checked the two sensors that i figured were for the fan and gauge and they seem to beo working fine. I'm not quite sure how to check them otherwise without buying new ones.
There doesn't seem to be any leaks anywheres but i'm not 100% sure.
I'm going to take the car in a few minutes and test it out to see if with the fan running it still over heats, if not than i found out what's wrong and i just need to check the wires and somehow test the sensors.
And if i were to replace the water pump now it would be because i have the money and since i don't know if or when this one will break. I'd rather do it now while i have the time and money than later when i don't and have to leave my car off the road for even longer.
I'm glad you got the thermosensor wiring problem sorted. 
I'll know better in the future...
