Hi all,

Quick question on the k74

Does engine management light come on if you get overboost or does the ECU just back the turbo off?

I've been going round in circles reading thread's and confused myself even more

Thanks

Hattman

first time I got overboost , the engine light came on and I lost all power as the engine management appears to cut the turbo
I limped home a few miles then booked it into mitsubishi
they told me it was overboost and adjusted it while it was in for a couple of recalls (think it was a dim/dim relay and power steering bracket or something like that)
it didn't happen again for a couple of years
next time it happened I pulled over straight away and turned the engine off
I waited a minute or two then restarted and everything was fine with no light on and no loss of power

in the last few years I owned the truck I noticed it would only ever happen when I was booting it and had the revs up high under load
mine only did it maybe once or twice a year so I didn't readjust it as I took it more as a reminder for me to not drive it as hard
I always got the engine light on when this happened

the guy I sold my truck to has had it over 2 years now and has never had the engine light come on so maybe his right foot isn't as heavy as mine is

Thanks for that.

Maybe it's not overboost then as management light doesn't come on.

Just sometimes it's as if the fins in the turbo don't shift to the right position sometimes. Lift off the throttle then gently reapply seems to help.
Already changed control solenoid with a milners one which improved things but it's still not quite as it should be.

Cheers for the info

@Hattman I sometimes had an issue where when I put my foot down it wouldn't boost like normal but would if I lifted slightly then put my foot down again.
this was cured by changing the fuel filter
when I did the filter I usually half filled the filter with forte injector cleaner then topped up with fresh diesel, then a good Italian tune up (giving it a good rev to blow everything out)
changing the fuel filter is always a good start with any engine issues
I only ever used genuine filters from Mitsubishi as they were only a few quid more than other non OEM ones

Now that's a good idea, hadn't even thought of that. To busy overcomplicating it. Def worth a go.

Thanks

My k74 didn't put the eml on with overboost, probably been wired to the abs light at some point , as above all the same symptoms