Thread: TD5 Coolant Temps

Originally Posted by Ean Austral

Gday All,

Headed south out of Darwin and we are towing a camper, but was amazed at the variation in coolant temp on the Nanocom. We went anywhere from 88.0 to 99.4 and all within 300rpm between 2200 and 2500..

So if this is the case and the temp guage never moved what is classed as a hot Temp reading.

We did have 38 outside at times, but it was interesting to see such a variation..

Anyway see how it goes over the next few days when the temp hits 40.

Cheers Ean

Sounds normal to me, the thermostat has to warm up quite a few degrees to get from just cracked open to bypass closed.

Dad just fitted one of Davys awesome enginesaver kits to his TD5.
Low 30's outside, hilly terrain, no towing. Engine averaged about 92 from memory.

I thought hot was 110 - 120, or was that the TDI?

This is somethink I also would like to know. Recently fitted an engine saver to my 02 TD5 auto, sits on 88-90 when not towing and 95-98 towing a small poptop in 30-odd temps. Been up to 100 or so on medium up-hills.

Now the question is, is this normal, in fact just what is normal! The Rave cd doesn't say anything about it - that I can find.

E3J

if thats all you're going to use the nanocom for throw the bloody thing out the window.

The temperature gauge is "normalised" so that if the engine is within its normal operating range of temperatures it wont move...

When it moves it wont be subtle about it it will haul ass up to the hot bit, dont worry you cant miss it

that first big movement does not indicate that you have killed the engine, just that you are about to unless you do something about getting the heat out of the engine rather nowishly.. when its finally crept up into the red, thats when your killing the engine.

theres a lot of threads that cover this..

IMHO its a good thing because it prevents people from getting caught out by the "boiling frog syndrome" where a hard hual slowly raises the guage into the danger area but becuase its been doing so slowly and the engine still hasnt given up it must be ok.

look at it this way. Oil pressure is far more important to an engine than coolant temperature (to a certain point anyway) yet all you have on the dash of 95% of vehicles (including heavy trucks and plant gear) is a single warning light that tells you you have the absolute minimum oil pressure required to have the engine running at idle when its not on. yet how many people switch there nanocom over to monitor the oil pressure or complain about how the low oil pressure idiot light has no calibration other than on or off?

http://www.aulro.com/afvb/technical-...emp-gauge.html

http://www.aulro.com/afvb/technical-...eated-td5.html

http://www.aulro.com/afvb/discovery-...ning-temp.html

http://www.aulro.com/afvb/90-110-130...ot-towing.html

http://www.aulro.com/afvb/technical-...p-monitor.html

http://www.aulro.com/afvb/technical-...ermittent.html

http://www.aulro.com/afvb/technical-...hermostat.html

http://www.aulro.com/afvb/discovery-...-ii-disco.html

http://www.aulro.com/afvb/technical-...hen-worry.html

Originally Posted by Blknight.aus

look at it this way. Oil pressure is far more important to an engine than coolant temperature (to a certain point anyway) yet all you have on the dash of 95% of vehicles (including heavy trucks and plant gear) is a single warning light that tells you you have the absolute minimum oil pressure required to have the engine running at idle when its not on. yet how many people switch there nanocom over to monitor the oil pressure or complain about how the low oil pressure idiot light has no calibration other than on or off?

The day of my TIF (Trial Instruction Flight) in an a light aircraft I wondered why motor vehicles did not monitor EGT & oil pressure.

Have procrastinated long enough and I will buy myself a Madman EMS for my birthday next month so the wife can give it to me.

If you're tossing out the Nanocom - throw it my way will you they are bloody hard to get hold of!

In a former career, I spent quite a bit of time flying helicopters around NT/K and western QLD chasing cattle as well as BTEC. As we were very mobile, we had an aircraft mechanic with us to keep 3 choppers and 1 fixed wing operational.

He was a bit of a geek and during a break in flying, he fitted out his personal 4WD with nearly every temp, pressure and boost diagnostic guage available in aviation.
He had temp guages in both diffs, T-case, gearbox and radiator. He adapted an aircraft pyrometer so had an EGT as well as a boost guage to monitor both sides of the turbo.
Added to this were volt guages for main and aux batteries as well as a crude but effective water tell-tale in his fuel tank.
He even adapted chip plugs to replace all of his drain plugs so he could be alerted to any metal fragments in diffs, t-case and gearbox

At night - the dash in his car never failed to impress anyone who saw it - it looked like a fighter jet glass screen but all this information overload came at a price..............this amiable and great bloke became totally obsessed with any variance in his drive train or engine.

We'd be driving along some of the long stretches and he would be giving us all 5 minute CB radio reports about a 20 degree temp change in his rear diff. It was novel at first until we realised that he was getting so obsessed, he would stop on a regular basis and climb underneath the car to....."Wanted to check all was OK"

Point I'm getting to is I suppose - intricate engine diagnostic equipment is essential in aviation. If something goes wrong - or is about to, it's not as if you can park on a cloud to check it out

It simply that a lot of the available equipment for our LR's is really a 'nice to have' but not necessarily 'essential to have'

That said though - I do have a Madman EMS installed in my D2. The main reason was as stated previously - we have minimal to no indication about oil pressure or EGT in a Discovery. EGT and oil pressure monitoring are critical to the longivety of a diesel - especially if you have performance enhancements and do a bit of towing.

Take my words about the geek in context - I wrote it with a smile and fond memories of his engine equipment OCD

And i know a guy who did something similar to his prized holden many years ago.

On a long trip,to Bathurst one year,the oil pressure line rubbed through on the exhaust manifold,destroying the engine.
Now if he had also left the oil pressure light operational,he would probably have noticed the fault earlier,& the oil would not have been pumped from the engine.

Guages are great,but many people do not monitor them all the time,(particularly if there are many of them on the dash)that's why lights, or alarms are often better,that is if they work correctly!