Has your MN engine been replaced as a result of overheating?

[kxboss]

Gee kx, if yo cracked 1.2million kms then it was probably due for a rebore and rings anyway.

was a long tripLOL

[shortSteve]

Yeah nothing wrong with ruling out a suspect fan but I'd say it's more likely that your engine is toast again.

The cooling systems are very efficient on these. I've driven around with a blocked radiator and hardly noticed any difference in coolant temps...Almost doesn't need one.

My triton was like this, always stayed 88-91, whether towing, 4wding or cruising. With one exception, hit 97 once labouring in 5th towing with air temp 48degrees, but a shift back to 4th dropped to low 90's.
Now, this challenger is always on 93-98degrees, fair bit hotter than the Triton did. This one is an auto, and heats up most at higher freeway speeds in 5th, but a drop back a gear drops the temps to 93 real quickly. Has done nearly 44k including a lot of towing a 2T van and a trip across the simmo, seems a different coolant to what was in the triton tho (less water %?). Can't believe how diffenent they are...

[coughy]

short steve change your therostate i put in a dayco one from repco and mine runs at 84c now on high way or around town
and put the new 50/50 mitsubishi coolant in
runs the best it has for temps in awhile now

[snakesoup]

isn't there a minimum temp that these things are suppose to run at ? what is that temp ?

[BillMcQuade]

isn't there a minimum temp that these things are suppose to run at ? what is that temp ?

Depending on the weather and driving conditions, mine runs at between 86 (cool weather, light throttle/decel) and 91 (long hill climbs under load). Most of the time it sits bang on 88.

If I remember correctly, the thermostat opens at 82.

[snakesoup]

yes mine is the same between 88 and 91

[Redneck198033]

yes mine is the same between 88 and 91

Mine did run at this before the Mitsi Service & A.C work. Not sure what has happened here. Would get to 97 if hauling 1.5tonne caravan up a hill with a warm day.

After a long drive the car will get to 114Deg C if left to idle, I guess cooling the turbo is a waste of time now till they fix the issue.

another thing I have noticed after last service is the boost will move so quick up & down with acceleration & will not regulate to 10 to 15PSI, Have been seeing 22 to 25 PSI sow 238 to 250+ KPA take approx. 100 of for atmospheric pressure.

Then the next day the boost will operate to 10 & 15PSi with no issues.

[brew_s]

Just got the news, looking like a new engine for my MY15 MN.Done just under 40k kms.
What happened to this being sorted by the early 2014 build date vehicles?

[Cowboy Dave]

It was fiction I'm afraid. Otherwise why would people have replacement engines failing too (making due allowance for some of them being caused by mechanical ineptitude).

[RHKTriton]

You'd think replacement stock would get a going over before despatching.

[Donuts14]

As someone that is looking for a Used Triton the MY13 is in price range. Is this overheating an issue for normal city driving and only happens when going off-road in high temperatures? Or can it happen at any time? I live in NSW if it matters.

[Cowboy Dave]

It's not a usage thing, it's a luck of the draw thing.

[Redneck198033]

Well the saga continues.

So after spending $260 on replacing the engine thermostat all looked ok until 1.5hours into the trip the engine spiked to 120deg c & stayed there for the next 30min till I got home.

Took it in to mitsi with video evidence this time as they could not find the stored fault from late December.

Coolant everywhere over the motor under the car.

So they me still driving the thing & are putting in a change motor request for the second time.

This will make 3 motors including the original in 88k of driving.

PS ADD THIS CARE TO THE LIST OF ENGINE REPLACEMENTS.

FIRST WAS AT 60K, SECOND WILL MOST LIKELY BE 88K SO NOT EVEN 30K OUT OF THIS ONE.

Also the overheating only happened after the 90k service done at 87k

This is a 2010 MY11 second engine done at December 2014 & new one still to come I hope.

Looks like its time to sell. shame I have 15k of extras on it.

Well as to the comment above luck of the draw, I think Mitsubishi have a lot to answer for, this model must be costing them so much in engine replacements & costing the owner their sanity.

[bodia]

Is there coolant change at 90k? Wondering if you had an airlock

[Monaro03]

Hi there
In my case my motor has not been touched. Im about to do the 100,000 km timing belt replacement. Been running it in 40 degree heat and has not missed a beat.

cheers
Monaro03

[Redneck198033]

Is there coolant change at 90k? Wondering if you had an airlock

A normal 90K does, but the motor was only due for 30K, so coolant was not done to my knowledge.

I was not charged for coolant ( $1150 for service ).

I did ask if there was a possible airlock in the system. when it boiled just after the service 22nd Dec ( serviced on the 15th 16th Dec 2016 ). Final death of motor after internal thermostat changed ( 5th & 6th of Jan 2017 ) during the pressure test for motor that I had to pay $200 for, showed no issues.

Well just before the motor boiled it was running at 83 deg c to 91 deg c very nice. then 1.5 hours of running boil boil boiled 120 deg c.

Not a coincidence to me, something has happened during the last service. Engine only has valve clearances done.

[brew_s]

So just picked my ute up from dealer after getting the engine replaced.
Do i believe them when they say the new replacement engines now have a modifed head?

[coughy]

??? did you ask what is modified??

lol proby oringed the head hahahahaha

[bigjobs]

I love the different little stories that dealers seem to tell the odd punter here and there, when asked for technical details.

Perhaps being within proper spec qualifies as "modified"

Maybe MMAL could answer that question?

[BillMcQuade]

Maybe MMAL could answer that question?

Yeah, and a pig with wings just delicately fluttered past my window.

[brew_s]

Ha yeah, im picturing the guy sitting on the factory floor in thailand 'machining' the deck of the head now using a 180 grit disc on his grinder rather than the 40 grit he has been using.

[RHKTriton]

How do the wings attach to the pig?

Which muscle group is involved in flapping them?

What's the top air speed a flying pig can achieve?

Grinder? Wouldn't they just use a cork block brew?

[Redneck198033]

Ha yeah, im picturing the guy sitting on the factory floor in thailand 'machining' the deck of the head now using a 180 grit disc on his grinder rather than the 40 grit he has been using.

LOL YEP more like 80 grit

[Redneck198033]

Update at this stage Mitisi is putting a new long motor into the rig again.

I asked for a car while they replaced the engine, once I asked for that an engine suddenly appeared.

Hope this one last just enough time for me to sell it.

[Jungas]

I'm going through this at the moment. Basic history is I have a 2013 triton I purchased in may 2013. Modified with all the normal stuff from day 1, bullbar, spotlights, winch, tyre lift etc. all was going good for the first 30k until one Easter i was towing my camper up to dargo and I overheated it in spectacular fashion,coolant everywhere and family stranded on the side of the road. Was towed to sale and then eventually back to frankston Mitsubishi. After a week or so the engine testing showed the head was pitted from factory and the pulled the entire engine out, sent to engineer to have the head re-machined flat and then engine put back together and back on the road. All was fine for about another 30k or so until I had another overheating episode but not as bad this time, took back to dealer and they did the recall works to deal with the issues being had by quite a few. Again car seemed ok for another 12 months or so, towing, normal driving, tough 4wding etc. last week car dumped coolant again whilst driving unloaded, and cruising on a country backroad at about 100. Back to dealer and they did tests for 2 days, response is there is nothing wrong with the car and any issues must be as a result of my bullbar and driving lights obstructing airflow. 2 days after recieving back it has dumped coolant again...... for the third time.

I'm so over the issues as I have built up and generally really love the car

Mmal just push me back to the dealer and the dealer thinks that everything is ok despite the history of problems ??

I'm in and think I'm going to have to get a second opIon before i lodge a formal complaint, anyone got a good cooling specialist or mechanic they know and would recommend???