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

[doreyg]

Just signed up today after my car boiled on the weekend and mechanic advised me of these 'issues'. Plan to take back to dealer next week and see what they say.

[AshTritonMN]

Just had my original MN MY14 motor replaced at 63k by Bendigo Mitsubishi. Usual warning lights, eating coolant etc. Very happy with the service provided, with nothing too much trouble. Service Manager - Ricky. Hopefully the new motor works ok....

[senatorjohn]

Doing a rebuild at present. Bought a 2010 Triton with 145,000 km. No service record. Repairable writeoff , allegedly water/storm damage. No sign of water damage but turbo noisy. Gave it an oil and filter change and then is apparently suffered oil starvation and stuffed the big end bearings and journals and rods. Picked up good second hand shaft, rods and pistons. Can't get selective bearings to get the bearing clearances within new specs, so will have to run with larger clearance. Still well below maximum service limit. No other damage to engine. Would have been better off with a new short motor for $3,000 seeing it will cost me $2,000 to get to that stage rebuilding my own. Not real excited about the project. Engine was full of shiny black jelly most probably due to lack of servicing so cannot blame the Triton for this problem. Sharp learning curve but that is not unusual for me. Hope to mend my ways very soon.
John

[1103cc]

2013 mn just started to blow out coolant out overflow bottle ,had engine checked with the overheating recall ,can hear water bubbling inside heater ,so a air block inside engine ,topped up with water ,doesn't get hot as yet but a visit to Mitsubishi on Monday

[kxboss]

MN 2013 4x4 twin cab, new motor at 80000klm piss poor service at Gateway Mitsu, wollonogn went to tynans kirrawee and great service loan car

[MakoShark2]

So, I've been gathering data from this topic and the one related here:

viewtopic.php?f=22&t=17446

bellow the numbers, each line meaning:

member (YEAR=<build_year>) @ <odometer>kms (<event_date>) => <event> (<duration>w)

eicarsto (YEAR=-1) @ 70000kms (2014-11) => overheating reported (0w)
Stumpy (YEAR=2010) @ 165000kms (2014-11) => overheating reported (0w)
arternune (YEAR=2010) @ 48000kms (2013-10) => engine replaced (2w)
arternune (YEAR=2010) @ 72000kms (2014-10) => engine replaced (2w)
AshTritonMN (YEAR=2014) @ 63000kms (2016-11) => engine replaced (-1w)
biggibbo (YEAR=-1) @ -1kms (2014-10) => overheating reported (0w)
bigjobs (YEAR=2014) @ -1kms (2014-11) => campaign (0w)
bigjobs (YEAR=2014) @ 28000kms (2016-02) => engine replaced (2w)
bigjono1975 (YEAR=2010) @ -1kms (2014-11) => overheating reported (0w)
BillMcQuade (YEAR=2013) @ 45000kms (2015-10) => campaign (0w)
BJ323 (YEAR=2013) @ 23000kms (2014-12) => engine replaced (1w)
BJ323 (YEAR=2013) @ 45000kms (2015-10) => engine replaced (8w)
bstarmotorsport (YEAR=2011) @ 110000kms (2014-08) => long engine replaced (7w)
butters (YEAR=2012) @ 50000kms (-1) => campaign (0w)
butters (YEAR=2012) @ 80000kms (2016-01) => engine replaced (-1w)
Desert Brewer (YEAR=2014) @ -1kms (2014-12) => campaign (0w)
Desert Brewer (YEAR=2014) @ -1kms (2015-02) => engine replaced (5w)
docta.phipps (YEAR=2012) @ 83000kms (2016-06) => engine replaced (-1w)
fsryrrwng (YEAR=) @ 15000kms (2014-11) => campaign (0w)
fsryrrwng (YEAR=2013) @ 30000kms (2015-06) => engine replaced (2w)
gravy (YEAR=-1) @ 130000kms (2015-01) => engine replaced (-1w)
griz066 (YEAR=-1) @ -1kms (2015-02) => engine replaced (7w)
haja (YEAR=2014) @ -1kms (2015-01) => engine replaced (-1w)
har05l (YEAR=2010) @ 141000kms (2014-10) => campaign (0w)
har05l (YEAR=2010) @ 168000kms (2015-08) => engine replaced (3w)
Harty (YEAR=2010) @ 64000kms (-1) => engine replaced (4w)
hec138 (YEAR=2012) @ 47000kms (2014-09) => engine replaced (16w)
Hopeihurt (YEAR=2010) @ 73000kms (-1) => long engine replaced (-1w)
Hopeithurt (YEAR=2010) @ 80000kms (2015-07) => engine replaced (1w)
jbmcqade (YEAR=2014) @ 10000kms (-1) => engine replaced (12w)
jbmcqade (YEAR=2014) @ 35000kms (-1) => engine replaced (-1w)
jet (YEAR=-1) @ 133000kms (-1) => engine replaced (-1w)
johnpej (YEAR=2012) @ 100000kms (2014-12) => long engine replaced (20w)
johnpej (YEAR=2012) @ -1kms (2015-05) => long engine replaced (-1w)
keg313 (YEAR=) @ 75000kms (2015-10) => engine replaced (-1w)
kxboss (YEAR=2012) @ 60000kms (2015-01) => campaign (0w)
kxboss (YEAR=2012) @ 80000kms (2015-10) => short engine replaced (-1w)
liamk (YEAR=) @ 15000kms (2015-05) => campaign (0w)
Major3 (YEAR=2013) @ 27500kms (2015-10) => engine replaced (8w)
makoshark2 (YEAR=2014) @ 30000kms (2015-08) => campaign (0w)
makoshark2 (YEAR=2014) @ 50000kms (2016-08) => overheating reported (0w)
makoshark2 (YEAR=2014) @ 58000kms (2016-11) => head replaced (4w)
maxinvan (YEAR=2010) @ 112000kms (-1) => engine replaced (-1w)
Mish (YEAR=2009) @ -1kms (2015-09) => overheating reported (0w)
Monkeyz (YEAR=-1) @ -1kms (2014-12) => overheating reported (0w)
Morgs n Jess (YEAR=2011) @ 120000kms (-1) => campaign (0w)
Morgs n Jess (YEAR=2011) @ 130000kms (2016-03) => long engine replaced (-1w)
morgstar (YEAR=2011) @ 100000kms (2015-06) => engine replaced (2w)
MrsH (YEAR=2013) @ -1kms (2015-03) => campaign (0w)
MrsH (YEAR=2013) @ -1kms (2015-09) => overheating reported (0w)
nf09 (YEAR=2012) @ 63500kms (2015-02) => engine replaced (1w)
ozzkev (YEAR=2013) @ -1kms (2015-02) => overheating reported (0w)
PhillipJ (YEAR=2009) @ 155000kms (2015-09) => overheating reported (0w)
Ranga Tang (YEAR=-1) @ -1kms (2015-04) => campaign (0w)
Ranga Tang (YEAR=-1) @ 100000kms (2016-01) => long engine replaced (6w)
ronnieq (YEAR=2009) @ 160000kms (-1) => head replaced, machined block (-1w)
sandym (YEAR=2014) @ 26000kms (2015-05) => head replaced (-1w)
satch1956 (YEAR=2014) @ 110000kms (2016-04) => engine replaced (-1w)
skilbys (YEAR=2010) @ 40000kms (-1) => head replaced (8w)
Sofled (YEAR=-1) @ -1kms (2014-09) => campaign (0w)
Sofled (YEAR=-1) @ -1kms (2015-01) => overheating reported (0w)
Speedy70 (YEAR=2014) @ 15000kms (2014-11) => campaign (-1w)
Speedy70 (YEAR=2014) @ 23696kms (2015-03) => long engine replaced (8w)
sthnbelle (YEAR=2009) @ 96000kms (2015-10) => engine replaced (-1w)
Stoneman (YEAR=2013) @ 60000kms (2016-04) => engine replaced (-1w)
strangeblue (YEAR=2011) @ 75000kms (2015-08) => engine replaced (-1w)
Triton70 (YEAR=-1) @ -1kms (2016-11) => engine replaced (-1w)
Tuflux23 (YEAR=2013) @ 40000kms (2015-08) => engine replaced (12w)
whyallastu (YEAR=2011) @ -1kms (2015-10) => campaign (0w)
whyallastu (YEAR=2011) @ -1kms (2015-12) => engine replaced (4w)
wildturkeycanoe (YEAR=2011) @ 160000kms (2016-09) => campaign (0w)

If you are listed please check if the info is right, and if anything missing (=-1) let me know what it is.

Of course, if you are not in listed but you actually own on of the affected Triton, please post below your data.

Thanks.

[colin b]

My Triton is fairly young with only 36,000 on the clock but it is a 2013 build and a few of them seem to have had problems. I took mine in for the cooling system recall as soon as I got the letter from Mitsubishi. They booked me in within a week, did the job in one working day and told me I had nothing further to worry about.

After reading through this thread I am worried, especially because I only use the Triton for towing the caravan and will run out of warranty on the calendar rather than on the mileage.

[RHKTriton]

Been a busy boy there mako.

Given the sample and allowing for deviations, it looks like the basic engine design has an inherent problem. If it was just a casting or machining issue, I'd be expecting a peak of engine replacements in a particular model year or straddling two years.

What we are more likely seeing is a particular engine of lower capacity has had its output pushed beyond a 'comfortable' level for its platform and is failing.

Mitsi just doesn't seem to have pulled it off as well as the Europeans.

[jbmcqade]

Yep 3 times good reliable cars hey

[Longranger1]

Makes you wonder about 2.5's that have been chipped and modified to the max yet never failed... I know a couple that are high mileage and worked hard with no issues. I'm not sure if it is a design fault per se, rather an engine assembly issue. I've had a fair bit of experience with this engine design family and found them virtually bullet proof when assembled with care. The block deck has never been a problem with correct machining, quality head gasket and a follow up retorque of the head bolts a 1000km after assembly. The use of single torque gaskets work OK on stock engines but I wouldn't push the envelope when modified. When coupled with a poor coolant change with attendant air locks and hot spots, I can understand a disproportionate level of failure... I never had mine done, but I did the coolant change. No issues at all.

[RHKTriton]

That's the enigma LR, obviously lots without issue.

Maybe an audit of the assembly crews on the production line might shine the light!

The Yankee production lines were notorious for lemons being produced on particular days of the week, etc. in past times.

[srb]

I agree with LR, it's definitely not a design fault. It's 100% manufacturing fault.

And going by the overwhelming evidence in this thread alone... You have to expect that ALL these engines are compromised by poor manufacturing. Stupid to think any other way. Bloody Mitsubishi!

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[BillMcQuade]

And going by the overwhelming evidence in this thread alone... You have to expect that ALL these engines are compromised by poor manufacturing. Stupid to think any other way. Bloody Mitsubishi!

Really? Because I count about 47 replacements, out of 23,000 members. If half of them are MN owners (15,000) that's a failure percentage (over a span of 6 years) of 0.313%

Let's assume that less than half have reported their issue, and generously round up to 1%

I know it's tempting to make dire assumptions, due to radio silence from Mitsubishi, but the facts will come out one day. There are some less mechanically-minded people who are becoming really worried by these threads, and it is not fair on them to reduce the confidence in their vehicles based on either speculation, or incomplete data.

I don't want this to turn into another "Cooling System Campaign" thread so that's the last I will post in this topic.

[docta.phipps]

And going by the overwhelming evidence in this thread alone... You have to expect that ALL these engines are compromised by poor manufacturing. Stupid to think any other way. Bloody Mitsubishi!

Really? Because I count about 47 replacements, out of 23,000 members. If half of them are MN owners (15,000) that's a failure percentage (over a span of 6 years) of 0.313%

Let's assume that less than half have reported their issue, and generously round up to 1%

I know it's tempting to make dire assumptions, due to radio silence from Mitsubishi, but the facts will come out one day. There are some less mechanically-minded people who are becoming really worried by these threads, and it is not fair on them to reduce the confidence in their vehicles based on either speculation, or incomplete data.

I don't want this to turn into another "Cooling System Campaign" thread so that's the last I will post in this topic.

I tend to agree on this. It's easy to get worried about what "may happen" and there is definately something to be concerned about, but overall the stats really aren't high.

People should take comfort that it seems Mitsubishi are taking responsibility if it happens and are replacing blocks. Assuming your log books are up to date which you would be silly not too for all other warranty reasons anyway.

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[srb]

Sorry I should have said that it's my opinion only.

I actually have a lot of respect for this 4D56 engine. It's robust, efficient and super powerful for its size... Unfortunately let down by its manufacturer.

My engine hasn't failed yet and it's been stressed more than most will ever be. Having said that I will continue to have the attitude that it could let go at anytime because there's still no PROOF that my engine isn't compromised. With this attitude I hope I'll have a good chance on limping it home if I'm out in a remote area. I keep a coolant temperature alarm set on the ultragauge at 100degrees... so I can hopefully catch it before it completely runs out of water. I also keep a keen eye on coolant levels during the week.

I also believe the real life engine failure would be far greater than 1% but that's just my opinion until there's hard proof from Mitsubishi.

Many of you might think I'm only trying to continue the shit storm from the other thread but that's not the only reason. I just know it's absolutely stupid to pretend these engines are safe. Reality check people! Until there's proof then I think it's totally irresponsible of any of us to suggest or encourage new or current MN owners that these engines are safe from the defects.

And I'll never give MMAL my praise. They're in damage control and will never let the real truth out. They've also let me down on more than one occasion so I wouldn't rely on them for a replacement engine if the worst was to happens.

Suck it up people, all us MN lovers are in it together. I still love mine and I'd still go around Australia in it. Again.

[RHKTriton]

So with the 'service campaign' do they stick in a higher temp. thermostat as part of the operation?

If so I'm thinking of returning to original, the vehicle is second hand and the service book that was in the glovebox is definitely not the one that would have come with the vehicle when new - common bits of info missing!

If stressing the motor for 10k plus hasn't caused it to fail then logically destressing can only be good.

[srb]

So with the 'service campaign' do they stick in a higher temp. thermostat as part of the operation?

If so I'm thinking of returning to original, the vehicle is second hand and the service book that was in the glovebox is definitely not the one that would have come with the vehicle when new - common bits of info missing!

If stressing the motor for 10k plus hasn't caused it to fail then logically destressing can only be good.

There's a few of us that share this opinion including me. However you do risk your warranty. But if you want longer term reliability and peace of mind, especially when travelling in remote locations then it definitely makes sense to go back to the original radiator cap.

I'm unaware if they replaced thermostat too... I doubt it.

[MakoShark2]

New engine head on mine... 4 weeks job

Temps back to "normal" which is for me: 89-91ºC most of the time, 85ºC going down and 94ºC going up.

And guess what? Now the radiator cap says 108kpa!

And won't bother asking why... Really don't understand these guys.

And since no new block, I'm sure that there will be more overheating issues sometime.

And that's about it, last Triton for me... Should pass this lemon before the warranty goes boom, which is next May.

[MakoShark2]

Didn't had the time to do some stats over those figures, so here it is:

Totals:
campaign = 19
overheating reported = 11
engine/head replaced = 47

from 2013-10 to 2016-11 (38 months).

By Year (occurred):
2014 campaign = 7
2015 campaign = 9
2016 campaign = 1
2014 overheating reported = 5
2015 overheating reported = 5
2016 overheating reported = 1
2013 engine/head replaced = 1
2014 engine/head replaced = 5
2015 engine/head replaced = 22
2016 engine/head replaced = 11

By Year (model):
2010 campaign = 1
2011 campaign = 3
2012 campaign = 2
2013 campaign = 4
2014 campaign = 5
2009 overheating reported = 2
2010 overheating reported = 2
2013 overheating reported = 2
2014 overheating reported = 1
2009 engine/head replaced = 2
2010 engine/head replaced = 8
2011 engine/head replaced = 5
2012 engine/head replaced = 7
2013 engine/head replaced = 5
2014 engine/head replaced = 12

Stats just for engines/heads replaced:

Group by (occured):
2015-10 = 5
2015-02, 2015-05,2015-08,2016-11 = 3
2014-12, 2015-01, 2015-03, 2015-06, 2016-01, 2016-04, = 2
2013-10, 2014-08, 2014-09, 2014-10, 2015-07, 2015-12, 2016-02, 2016-03, 2016-06, 2016-10 = 1

reported with no date = 8

More than one replacement:
jbmcqade = 3
Speedy70, BJ323, johhpej, artemune = 2

Mileage (occured):
Average = 71 917kms
Std dev. = 39 332kms
Median = 68 000kms
Minimum = 10 000kms
Maximum = 168 000kms
Percentile 75 = 100 000kms
Percentile 90 = 130 000kms

excluded 7 occurrences with missing mileage

13 of 16 who reported having the campaign had their engine/head replaced afterwards
4 of 7 (of the above who provided mileage data) had their engine/head replaced about 20 000kms after the campaign

Duration (occured):
Average = 5.92w
Std dev. = 4.88w
Median = 4w
Minimum = 1w
Maximum = 20w
Percentile 75 = 8w
Percentile 90 = 12w

excluded 22 occurrences with missing duration

[har05l]

Wowsers


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[Crash486]

Thanks for the analysis.

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[kxboss]

add me for another motor , ist at 80k then now at 1200k 2012/13 mn 4x4 both time overheat. 1st time short motor old head used , this time a long motor they tell me.

[Redneck198033]

Had my engine full block replaced at 60K ( 5/11/14) & have just boiled it 120deg c for a second at 90k (21/12/16), will take back to the auto sparky place that replaced my AC compressor & viscous coupling as she was running at 94 to 98 deg most of the 6 hour round trip to Sydney until the 120deg c coming up a slow hill part of the trip. I did notice that once it was getting to 96 & above if I changed to a lower gear the fan would be louder due to the 2500+ RPM on the engine, this would cool the engine coolant temps down to 90-91deg c.

So looks to be viscous coupling to me.

If I get no joy here I will take back to Mitsi & give them the story.

[RHKTriton]

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

[srb]

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.