Engine temps.

[reeldreamer]

I noticed my temperature increased by around 4-5 degrees since the installation of the ARB deluxe bar! Previously the highest I got with the boat on the back was 90 degrees now i can hit 88-90 degrees with no load on the back! Interested to see what happens when I tow the boat.....

Did you have the MRT before the bar Mitch?

Yeah that was with the MRT tune Joe

[Homer]

i know people have looked at a digital temp guage but my appears to sit over the half line as well, but if you look at the temp guage you will find that a bit above the "half way" line is really the half way.

That really surprised me Josh.

So I got my vernier and did some measuring and I found 'just over half way' was in fact right smack in between 3/4 and 1/4 - well actually a little bit more than that on one side.... but then, when I was using the 1/3 scale it is even more confusing, so I don't know where we go from here with this temp thing...digital is soooo much easier

[srb]

Digging up bit of an old thread here... I have noticed my temperatures to be around the 90 to 100 degrees most of the time. (MN 2.5 hp) (Ultragauge readings) Have been monitoring it since new last year and now has 25k on the clock and runs as sweet as a nut, but I reckon it's a little warm. I have no bull bar yet and it bloody cold weather atm yet my temps are still high. If i'm cruising 110kph on the highway on the flat it will be in the high 90's? If I hold this speed up a small incline it rises to just over just over 100 degrees Does this seem right? The temps do go down to about 78-80 going down a long hill. During summer it hit 112 degrees going up a long climb and stock temp gauge moved a little bit over half way before I backed off and crawled the rest of the way, admittedly I do carry quite a load all of the time but after checking the colour of my coolant in the overflow bottle I was a bit concerned And after reading the thread on ''seized 2.5'' I thought I'd ask other MN owners with Ultragauges what their temps are? Oh and my coolant in the overflow bottle was a milky green colour? I tipped it out and replaced it with water to see if it comes back. I took the radiator cap off and the coolant looked the normal green colour but had a white scaly residue stuck to the bottom of the filler. Could be normal but i'm really not sure:? I plan to put a bullbar on and bigger tyres on soon and do a big trip around Aus so just keeping an eye on all these sorts of things. Any thoughts guy's? Oh and no I don't have mud and crap stuck in the core, this has been like it from new.

[fraz91]

My temps usually sit between 88 and 94 on the commute to and from work, but thats at 110 with no load on the car whatsoever. It does sound a little warmer than it should be, is your viscous fan running constantly as well? I've found it comes on once you're over about 95degC

[Cowboy Dave]

Mine is usually on about 90 but cycles up higher every now and then on freeway runs. My dealer mechanic reckoned it was designed to run hotter every now and then to help burn off carbon. I'm still a bit hesitant to accept that but I've seen it happen on long trips, the temp sneaks up at random and unrelated to load so it could be an ECU controlled thing. But yeah over 100 degrees I wouldn't be happy with on an ongoing basis.

[Froggy]

Milky green does not sound good! I'd be taking it to the stealers and getting the cooling system pressure tested. Could be oil in the water indicating head gasket troubles.

[ag9111]

Cruising along at 100kph my MN sits on 86 deg. hit a hill and it creeps up. never seen it anywhere near 100

My coolant is bright green. No milky look at all

[srb]

Yeah good point, I haven't really noticed it at all? I can't recall It making any noticeable roaring noises when it gets hot. Will have to investigate this. Cheers mate. EDIT- this is quoting Fraz's comment.

[fridgie]

Mines an ml, but when I had temps like that my radiator was partially blocked internally, since the clean out sits around 79-80deg and maybe hits 85ish under load on a hot day.

Something doesn't sound quite right, would def get radiator checked out.

[srb]

Milky green does not sound good! I'd be taking it to the stealers and getting the cooling system pressure tested. Could be oil in the water indicating head gasket troubles.

Yeah I know but it wasn't oily sort of like it had talcum powder mixed with in it. As soon as I tipped it out I kicked my self for not taking a photo. It goes in for 30k service soonish so will bring it to their attention.

[joelzo]

Mine cycles between 88 and 92ish.
Just tonight sitting on 100kmh and 3 degrees outside it crept to 94 for a bit then back to 88 again.
Much like CD said

[wake jake]

Mines an ml, but when I had temps like that my radiator was partially blocked internally, since the clean out sits around 79-80deg and maybe hits 85ish under load on a hot day.

Something doesn't sound quite right, would def get radiator checked out.

I averaged 79-80 aswell fridge. Least I know somethings right But along at 105-110kph it can get up a hill to 86-87 no load except a bike. Coolant is also bright green Maybe just my ML

[srb]

What temps should we expect the viscous fan to cut in? Fraz mentioned 95 degrees? I can't recall mine ever cutting in I hadn't thought about it before Fraz mentioned it.

[Cowboy Dave]

Not sure on the fan cutting in but I reckon the MNs run a bit hotter than the MLs.

[srb]

Yeah for sure but I think mine seems to be on the hotter side for an MN.

[Cowboy Dave]

Yeah I agree, but I guess I'm saying it's safe to ignore the ML temps above and focus on the figures from those of us with the more powerful engines

[gregned]

Mine (mn) runs at 86 until the weather gets hotter fan cuts in at 90
Towing up hill gets to 109 110 degrees

[Mooons]

Mine cycles between 88 and 92ish.
Just tonight sitting on 100kmh and 3 degrees outside it crept to 94 for a bit then back to 88 again.
Much like CD said

this one sounds very much like mine
With deluxe bar winch wire rope 32"s & a lot of crap in the back

[viking shippy]

Corect me if I'm wrong but taking into acount that Coolant and a pressurized system. water boils Around110 -120 degrees depending on the system my mechanic told me any thing above 100 degrees for more than 50% of the time is is a worry!

[viking shippy]

Just checked with a marine engineer he said "100c any time you have the start of a prob ie water pump radiator thermostat or all three...get it checked out cause it will only get worse with summer coming and cost you more in the long run"

[Sky Miner]

Mine (MN) still hover around 86-89c never been over 95c even
when i moved the provent to the front of the radiator it hasent changed temps

[Longranger1]

Mine peaks at 94 almost regardless of ambient temp - mostly 91 to 92. I can't believe a dealer would think that they are designed to run hot occasionally - I call BS.

A wax pellet in a thermostat isn't that smart.... On the other hand, injection timing could be altered occasionally for a cat' clean out maybe? And that could stress the cooling system a bit.

[srb]

Hmm mine got to 98 early this morning going up a short hill and it was bloody cold outside.
I checked my overflow bottle tonight and found a little more of that milky crud at the bottom, sort of looks like white algae.
I think I will do a flush and clean on the weekend and see what happens. I wouldn't have thought you would see this on a car thats only a year old.

[viking shippy]

Mate If you are getting constant 100c temps
I wouldn't touch the coolant I would take it straight
to the good blokes at Wyong Mitsubishi
see what they say
it's under warranty and there looks sounds like
There's something wrong ASAP

[viking shippy]

My truck is running ml 85--8 all Day... arb bull bar inc