I have Stack A pillar water temp gauge which the previous owner fit and it used the sender on the water pipe, the same one as the stock clocks gauge takes it feed from.

 

The clocks needle sits just a smidging above halfway - perfect I am happy with that.

But on the Stack gauge it was up at 205f when fully warm which is 96 celsius - clearly incorrect and I do know down to calibration !!! Not to mention too far along in it's range as I like the needle to sit somewhere in the middle of it's travel.

So I experimented and found by fitting a resistor in line it dropped the gauge to 170f which equates to 77c, I don't have a conzult to test but my guess is this isn't too far away from the actual and the needle being in the middle of the range I can monitor better :yes:.

 

You will notice I had to be careful with the fan and I spaded up a resistor to show, this as now been soldered in properly and tidied up.

 

[video=youtube_share;6b7oyNe96BU]

So in effect you have created your own water temp gauge to read what you want it to read, rather than the actual reading :lol:

So in effect you have created your own water temp gauge to read what you want it to read, rather than the actual reading :lol:

 

Yeah..pretty much :wink:.

So you have 2 gauges on 1 sensor ? :)

So you have 2 gauges on 1 sensor ? :)

 

I do...both now working in conjunction :cool3:.

I do...both now working in conjunction :cool3:.

 

It makes no sense :) just get a sender for your aftermarket gauge

On the whole our footstump comes up with some great mods, its only the rare occasion he has a tardical moment :lol::lol:

It makes no sense :) just get a sender for your aftermarket gauge

 

I did and put it in the top of my aftermarket rad and the reading went off the scale, so clearly it was the wrong sender !!!

 

My way is tidy and 77c cannot be far off, once the needle moves away from this point I know I have a problem, doesn't really matter whether really is starts off when hot at 65 or 80.

So do resistor mod on aftermarket sender and that way you'll have 2 readings. I might have 250f sender. Will have a look for you

are you absolutely sure you know what the genuine running temp of your engine is mate? turning up the radio to hide a rattle is one thing but recalibrating a gauge to hide what could be quite a warm engine is another! :eek:

are you absolutely sure you know what the genuine running temp of your engine is mate? turning up the radio to hide a rattle is one thing but recalibrating a gauge to hide what could be quite a warm engine is another! :eek:

 

That's not the case at all, I had ecu talk on it a while ago and it was fine, cannot remember exactly but somewhere around what it's reading now with the resistor on.

I also had a split hose a while ago and this water loss caused overheating and even the stock gauge needle moved up, so I do know the signs it gives me when it gets too warm, ie close to 100c.

The Stack sender wire is not meant to just be plonked and piggy back on the water pipe sender so it was no wonder it was reading high........no I am quite happy with this in line resistor to retard back the reading.

in that case, good work sir! :thumbup: