you guys all know that the middle point in our cars is pretty much "holy shit" mode. but after installing a brand new sender for my temp gauge, there were some interesting things I noticed. in all of these pics, the rad fan has kicked in (meaning that it's at roughly the same temperature hot enough to have the thermostat open) AND all three pics are within a span of 10 seconds, but check out where the temp says it is: ignition ON, car off, notice temp and voltage: 12v car now ON, me holding down both power windows to lower voltage: 10v as soon as I let go of the power windows and let the voltage run normally when car is on (14-15v) the temp gauge also rises. so my theory here is that not only should it be maxed at roughly 50%, but that when your voltage is higher it reads even higher! input?
My temp is always up just below half way, but it never overheats or anything :/ Since the temp gauge is electric, I'm guessing it's calibrated to ~12v and fluctuations in the voltage that's run through the temp sensor change the reading. Just my 2c. Not so sure how all the systems in our cars work, molecular physics is more my thing :mrgreen Aaron.
bad earth i would suggest check earth at back of inlet manifold... temp gauge should be just below half way at normal temperature, anything higher somethings wrong..
what i'm trying to point out here is that: voltage @ 12v = MAX temp: 11pm on the gauge voltage @ ~14v = MAX temp: 12pm on the gauge
-a hah! yep yer good. -the windows ect are creating a draw on the system, dropping voltage and lowering the gauges....no? idle drops aswell? mine does.
idle does drop for me too, but what i did was create the draw on the system when i start, before the alternator has a chance to charge the system going from ON(car off) to ON(car on).
- i think im getting what your getting at. -the temp sender is a single wire iirc, so if voltage is lower overall the gauge would read that as more resistance from the sender. ???
that makes a lot of sense then! iirc, the pins on the back of the gauge is IGN+, Ground and TempSignal or something like that.
