Range Rover Temp Sender Thread Size?
Discussion
Dalamar said:
That looks spot on Dalamar 
The only downside to this TT6811-03 sender was Caerbont's minimum order quantity of two, so at just £14.18 delivered it's a no-brainer for people to go to Demon Tweeks now & buy it singularly.
Great work and thanks for sharing
Steve_D said:
ChimpOnGas said:
Dalamar said:
That looks spot on Dalamar The only downside to this TT6811-03 sender was Caerbont's minimum order quantity of two, so at just £14.18 delivered it's a no-brainer for people to go to Demon Tweeks now & buy it singularly.
Great work and thanks for sharing
Nil stock 14 days to order in.
Damn.
Steve
Sardonicus said:
Well I was impressed with COG find so thought why not 
so purchased 2 and yes gauge climbed in a more linear movement and seemed more responsive when up to temp i.e you could see obvious changes with fans ON/OFF.
Now the bad bit .... glancing at the gauge after a coastal blast with lots of high RPM/load action and then seeing this
ended up hitting a gauge indicated 120c on way home (normally sits around 80) fortunately oil pressure normal inc oil temps and no rock hard hoses or vomiting coolant but not before I pulled over having heart palpitations 
I think you've just been unlucky there Simon so purchased 2 and yes gauge climbed in a more linear movement and seemed more responsive when up to temp i.e you could see obvious changes with fans ON/OFF.Now the bad bit .... glancing at the gauge after a coastal blast with lots of high RPM/load action and then seeing this
ended up hitting a gauge indicated 120c on way home (normally sits around 80) fortunately oil pressure normal inc oil temps and no rock hard hoses or vomiting coolant but not before I pulled over having heart palpitations 
, I took advise directly from Caerbont on this who made the TVR gauges in the first place and know a thing or two about gauge to sender matching, also no one else that I'm aware of has suffered such a massive over read situation? While I'm sure you'll tell me your system was well bled, I have to say if I could change anything about the TT6811-03 sender I'd make it longer.
If there's a pocket of steam in the head there's every likelihood the sender will read high, being shorter than the Range Rover sender this is more likely as it may well sit above the coolant level where the Range Rover sender will still be partially submerged.
I remain very happy with my TT6811-03 sender its a definite improvement over the resistor mod on the Range Rover sender as I discovered that idea simply can't be trusted to warn the driver of an overheating situation making it worse than useless. As reported when I published my test results I did experience some spikes early on but they have since disappeared and were very temporary even when they did take place. During the warm phase up the gauge on few occasions briefly overshot my Canems temp reading but soon returned to normal within seconds, and this has not happened for well over a month now so it seems my sender has completely settled down.
On a separate and I believe unrelated note yesterday I bled my cooling system as for some time my offside rad fan has been blowing cold air, even on hot days with the car up to full temp, I used the big funnel in the swirl pot method to create a nice big header of high up coolant to purge out any air but the offside fan was still blowing cold indicating poor flow across what is of course a cross flow rad.
so I reverted to force filling the rad itself at the bleed screw in the offside rad tank which did the trick nicely, to be honest this is where I would normally start the bleeding process anyway before moving my way higher up the system. My point being a header fill at the swirl pot is never going to fill the rad and its tanks so always start at the rad bleed screw before working your way up, my rad fill came with a lot of air followed by a final surge up that completely back filled the empty funnel with quite silty looking coolant so when the spring comes around again and it's time to refresh my coolant with new antifreeze I'll be giving the entire system a back flush.
Anyway for now it's all good with a nice 50/50 mix I only added when I fitted my new vaporiser so it's good to cover this winter, the nearside fan now blows hot air proving the rad is flowing from n/s to o/s just as it should, the heater runs super hot, and there's none of the tell tale gurgles from the passenger footwell (the heater) that experience tells me its time to bleed the system.
I'll end by saying it's quite clear with the TT6811-03 sender being quite a bit shorter it's especially important to make sure your coolant system is perfectly bled
Gassing Station | Chimaera | Top of Page | What's New | My Stuff