running temp

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wiltshire landyman

wiltshire landyman

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salisbury plain wiltshire
so after probs with 300/200 temp senders and guages i finally got round to wiring up the digital temp guage ive had for ages..

so time for the stoopid qs..

what sort of running temp so i be looking at?...picture was taken after a long run and at its highest reading it was 80 degrees but seemed to be around 76/78

Photo0874.jpg
 
time for stoopid answer.....
engine temp should be about 86-90C. However it depends on where you are measuring the temperature - obviously if its on the return from the radiator, it will be a lot cooler than if measured on the exit from the engine. You really need to read maximum temp and that is at the exit from the engine (usually thermostat).
Having said that, vehicle engines are most efficient, the hotter they run, without overheating and distorting components or blowing gaskets.
 
The Mad Hat Man said:
time for stoopid answer.....
engine temp should be about 86-90C. However it depends on where you are measuring the temperature - obviously if its on the return from the radiator, it will be a lot cooler than if measured on the exit from the engine. You really need to read maximum temp and that is at the exit from the engine (usually thermostat).
Having said that, vehicle engines are most efficient, the hotter they run, without overheating and distorting components or blowing gaskets.
Click to expand...

cheers mhm...the sender is a direct replacement for the standard sender so its on the thermostat housing..


so stoopid qs num 2..

at what temp should i start to be concerned?,obviously having a guage with a needle b4 you could see when temp was rising and when it was nearing the red
 
wiltshire landyman said:
so after probs with 300/200 temp senders and guages i finally got round to wiring up the digital temp guage ive had for ages..

so time for the stoopid qs..

what sort of running temp so i be looking at?...picture was taken after a long run and at its highest reading it was 80 degrees but seemed to be around 76/78

Photo0874.jpg
Click to expand...

bloody ell mate thats a bit chav ait it :rolleyes::D
where have you put the inclameter now :D
 
wiltshire landyman said:
never ad one and never will,but i am paranoid about electrickery and overheating issues;)
Click to expand...

i find with my 200tdi its more trying to keep the temp up than down (in the winter cant get any heat out of the heater at all without putting a muff on the rad)
i have a manually operated only kenlow on it , only time i have to keep an eye on it is when laning sometimes at low speeds and low gears

you say about the electrickery could'nt believe the other day a peugot 205 van we had did'nt have a gauge just a warning light :doh::mad:
 
WLM
I too fitted a digi Water Temp guage after failing to get the original to work right.
It is in the original position on top of the head.
Over summer & Autumn it was usually running at 78-80.
I have also removed the viscous fan & fitted a Mondeo leccy fan. This only usually cuts in if doing slow stuff etc.
But I have noticed over the last couple of days, since this cold snap (Snow) that it only gets to 65 degrees, even on a long run.
This also has an effect on the heater output.
Last week i had to turn DOWN the heater output-too HOT.... I know hard to believe on a Defender....
But today, it was warm but not hot!!!!
Maybe time to fit a rad muff for winter?
 
wiltshire landyman said:
at what temp should i start to be concerned?,obviously having a guage with a needle b4 you could see when temp was rising and when it was nearing the red
Click to expand...

Again - a difficult Q to answer. It depends on
a). where yu are measuring the temperature, as mentioned before.
b) the coolant pressure (the higher the pressure, the higher the boiling point)
c) the airflow around the engine (see here)

however I would suggest as an educated guess - somewhere between 102C and 105C. Anything above 100C, I would consider as being abnormal.
You should also consider the consequences of an overheat - is it a head gasket change or a buggered head :(.
 
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