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

[RHKTriton]

Before you panic...

Basic checks

Any debris stuck between AC and radiator cores?

Fan clutch working properly?

Coolant level OK in radiator?

Fan belt tension - although serpentine belt on mn - should be OK.

Sticky thermostat?

Water pump should be fine with those kms.

Have you checked for combustion gases in coolant?

Is the temp sensor OK?

[Geralt of Rivia]

Before you panic...

Basic checks

Any debris stuck between AC and radiator cores?

Fan clutch working properly?

Coolant level OK in radiator?

Fan belt tension - although serpentine belt on mn - should be OK.

Sticky thermostat?

Water pump should be fine with those kms.

Have you checked for combustion gases in coolant?

Is the temp sensor OK?

It was the bull bar, it’s the only recent change.
Move the number plate out of the way, as it was blocking air flow. so air flow is getting through but not much as there could be. Not perfect but stayed in the middle for 80% of the trip. Only went up when we need more power.

[f12003_ga]

My truck is in Sutton's Mitsubishi Arncliffe Syd for an engine replacement. Been approved Friday last week and Monday coming should receive it to start. It's a GLX-R my15 MN and only done 38,000 when my engine overheated for the 1st time on Easter long weekend. No Qs ask they said leave car with us and we will call you in couple hrs. It's crazy this has happened! But at least I had Mitsubishi warranty remaining. So no cost!

[f12003_ga]

Update on my truck. It should be ready this Friday with a new Long motor. Can I take it for a long drive or do I have to drive around the city for 1st 1500kms ?

[f12003_ga]

Picked up my truck tonight and wow she goes beautiful, more quite and lol the engine oil is so clear after 45 mins drive. Very happy!

One thing I'm going back is bc it's so dirty of grease marks at the front end. They know I bought the car in no marks as the car is new 38,000kms. He said bring it in anytime and we will detail it! ( Good )

Another thing my Speedo doesn't reset and it will be hard to keep track of KMs for the new engine.

Anyway I'm happy and I hope it stays goodb for a long time as I'm keeping the car for a long time

[RHKTriton]

Sounds good.

Just keep your eye on the coolant bottle and make sure there's stuff in there. It may drop if there are any airlocks remaining after fitting.

Your user manual may indicate the typical breaking in process for the motor, if not, don't flog it and vary the revs a bit while driving for the first 1500kms.

[f12003_ga]

So is it ok to go to Wollongong tomorrow? Just for cruise.

She still runs beautiful and so quite. Love the oil is now so clear not like before you get your service done then check the oil and it's BLACK lol.

[Geralt of Rivia]

Quick update, bull bar was blocking air flow. Made some custom slots/holes and it has improved things.
Got OBD meter (scan gauge) and notice when on the highway at 80-100km the dash temp gauge goes up! But on the scan gauge the readings for Air InTake (AI) is 60 and Water Temp sits at 88 but on the dash the temp gauge raises....but is only when we’re on the highway at those speeds. Whenever Airtake increases the dash temp gauge goes up.

Crazy.....it’s got me for now....

Got it booked in with Mitsubishi next week

[f12003_ga]

So now after 400kms from New engine ( Long engine I say ) been to Wollongong and Nowra and back with no problem. Engine sounds little quieter then before. She runs smoother and more grunt etc.. I don't tow anything.

Next MTH I'll be going to Dubbo zoo for a long weekend with my family. It's going to be a long drive so hopefully everything will be ok.

Coolant bottle hasn't moved only very very tiny went down. Just right under max line. Should I be concern?

Ooops then coming winter peak season we are off to the snow Thredbo village.

[Geralt of Rivia]

Went to Mitsubishi today and they did a pressure check and changed the radiator cap to:
Radiator cap valve opening pressure changed from 109kPa to 127kPa effective 21/02/2014

Then they suggested to:
Replacing the coolant (To increase concentration from 30% to concentration 50%).

And look at replacing the radiator completely.

It’s my understanding by doing this to the radiator cap (to 127kpa) may also shorten the life of the engine hoses.

They mentioned there’s no loss of coolant and they did a diagnostic test and said if it keeps overheating, to come back and they will run more test. I was thinking why didn’t you run the other test now.

It’s a workaround without actually fixing the issue. Pretty disappointed in my local Mitsubishi dealer.

[NowForThe5th]

It's been covered here before, but they have a procedure to follow and they've done that. Dependent on what happens with the higher pressure cap they will move on to the next step, or it won't be necessary.

[Geralt of Rivia]

It's been covered here before, but they have a procedure to follow and they've done that. Dependent on what happens with the higher pressure cap they will move on to the next step, or it won't be necessary.

Mitsubishi said they did a pressure test and results came back fine.
Though Mitsubishi recommended a new radiator and hoses and change coolant to 50/50.


So new radiator, hoses, intercooler, 127kpa cap and new themostat was all done.
Today when driving at 80km, temperature went straight up. Pretty disappointed.

I did notice the top radiator hose was hotter than the bottom one, seem to be a flow issue maybe?

[RHKTriton]

You'd hope there was a temperature difference between the hoses - the radiator is a heat sink for the coolant after all.

[Geralt of Rivia]

You'd hope there was a temperature difference between the hoses - the radiator is a heat sink for the coolant after all.

agree, but yesterday the bottom hose seemed stone cold. I would expect room temp for the bottom hose...
I’d expect some difference but not extreme end of the scale. Either way it still overheated.

Thought since it’s new coolant and radiator maybe it’s an airlock/bubble. Took the radiator cap off overnight to see if it might find its way out (if that’s the cause).

[Maxiy]

Mitsubishi said they did a pressure test and results came back fine.
Though Mitsubishi recommended a new radiator and hoses and change coolant to 50/50.

Yeah they did the same thing with my brothers MN. they have a check list they have to work through first, before they can give the green light on a new engine. It can be very frustrating, as you have to keep taking it back, but once they have worked through the list, and approval for a new long engine, they are pretty quick to turn them around.

If you do end up getting a replacement, my only advice (depending how competent your dealer is) would be to do a spanner check on everything once you get it back. My brother found a heap of loose bolts and a missing lower bell housing cover when he got his back.

[Nswgelly]

Luck of the draw I suppose, I've got a bit over 2k on the new motor now, so far so good, drives much better than the last one even when it was new. But it's a good point, how many new motors do you need before it's time to pack it in and get a different brand? The time off the road for each new motor is three weeks or more. When you commute interstate for work that's debilitating even with the novelty of getting a new motor.

Well, about 5,000km on the new motor, so far so good, started out on a trip to ayers rock towing the caravan, didn't even make it over the first climb without boiling, tried to manage it, but it was screwed. Had to turn around, family devastated, holiday had been planned and booked for a year. Looks like motor number 3 on the way. After that gets done I'm finished with Mitsubishi. I'll bite the bullet and buy a Toyota. Don't want to see my daughter bawling her eyes out again like that. Suppose I'm ranting, but why replace a faulty engine with another faulty engine, Wtf Mitsubishi..?.!

[wildturkeycanoe]

Luck of the draw I suppose, I've got a bit over 2k on the new motor now, so far so good, drives much better than the last one even when it was new. But it's a good point, how many new motors do you need before it's time to pack it in and get a different brand? The time off the road for each new motor is three weeks or more. When you commute interstate for work that's debilitating even with the novelty of getting a new motor.

Well, about 5,000km on the new motor, so far so good, started out on a trip to ayers rock towing the caravan, didn't even make it over the first climb without boiling, tried to manage it, but it was screwed. Had to turn around, family devastated, holiday had been planned and booked for a year. Looks like motor number 3 on the way. After that gets done I'm finished with Mitsubishi. I'll bite the bullet and buy a Toyota. Don't want to see my daughter bawling her eyes out again like that. Suppose I'm ranting, but why replace a faulty engine with another faulty engine, Wtf Mitsubishi..?.!

I hope they don't try to blame the bullbar, driving lights or some other reason for overheating. That was my dealerships response to overheating issues. What a cop out.

[Nswgelly]

No they're wearing it, I'm actuality exploring getting the new motor, selling the motor and finding something else that will fit under the bonnet, nice if I could get a six cylinder td

[msrlo]

good luck with buying a Toyota, I personally know two mates with a hilux and another with a Prado. Major issues with the DPF, all three have to stop on the Rd when the burn light comes on and flick a togel switch and do a manual burn because Toyota cant fix it. Another mate has a cruiser ute and it leaks oil and fuel and he drove to Coober Pedy and and had to get it towed because it broke down on him again. All new Vehicles

[RHKTriton]

If I was looking to replace the 2.5 I'd be considering the Cummins 2.8.

Alternately, once you get a replacement engine, do a proper air bleed once you get it home.

[Nswgelly]

Nah bit the bullet, got a 2011 76 series Landcruiser pre dpf. So all good. Selling the triton once Mitsubishi fix it.

[RHKTriton]

Guys at ARB will be rubbing their hands...ready to 'receive' all your spare cash.

[jodxom]

I had bubbles also after a hard run uphill etc.
Not fast In low range.
Then every night I could hear it blub blub.

When cool, I filmed the removal of the radiator cap and the rush if air/gas I to overflow. Did this everyday for 3 days.
Had returned car many times. Once film was shown engine replaced with new crate motor immediately.
Happen at 60kms.
Was told it was all those things also. Lights, bar etc.
The film of the gas was a killer. Exhaust leaking I to water. Dodgy tooling on the block.
Was given a loan car and all fixed. Car now done 100km all good.

[Nswgelly]

Ha ha, lucky enough I've found one with the full arb treatment already... Happy days

[RHKTriton]

Be funny if that guy had moved into a Triton.