2019 Mitsubishi L200 odd noise at c1520 rpm
Discussion
Hi folks,
Yesterday our 2019 L200 developed an odd noise. The car has about 20k miles on the clock and has had a very gentle life.
It is a lease car so no major panic but I curious as to what the issue is. I suspect it is turbo related but I'll defer to the experts on here.
The noise is really more of a high high pitched rattle - a little like a lose heat shield, but that's not it. At first I thought it was some sort of harmonic vibration from a lose bolt or screw, but I'm not convinced of this now.
Interestingly it only occurs are a VERY specific RPM, and only when building revs slowly rather than when hard under power or when the revs are falling. Above this RPM level the noise goes away.
It happens a fraction above 1500 rpm - say around 1520, and is gone before it reaches 1550. It really only seems to be a very exact rpm and not across even a small range.
It occurs in every gear but not in neutral - i.e only when there is a power demand. ( I have not tried it in reverse!).
Also happens in both the 2wd or 4wd setting.
Does the L200 turbo kick in at 1500 rpm by any chance? I'm wondering if it is a turbo bearing or something. The car drives as before, no vibration and no loss of power - but every time the revs hit 1520 under gentle throttle there it is.
Also, does this sound like a "don't drive the car" noise, or a more of a "it will be fine for a while" noise. Obviously I'll take the car to the dealer but can't do that for a few days.
Thoughts appreciated.
Yesterday our 2019 L200 developed an odd noise. The car has about 20k miles on the clock and has had a very gentle life.
It is a lease car so no major panic but I curious as to what the issue is. I suspect it is turbo related but I'll defer to the experts on here.
The noise is really more of a high high pitched rattle - a little like a lose heat shield, but that's not it. At first I thought it was some sort of harmonic vibration from a lose bolt or screw, but I'm not convinced of this now.
Interestingly it only occurs are a VERY specific RPM, and only when building revs slowly rather than when hard under power or when the revs are falling. Above this RPM level the noise goes away.
It happens a fraction above 1500 rpm - say around 1520, and is gone before it reaches 1550. It really only seems to be a very exact rpm and not across even a small range.
It occurs in every gear but not in neutral - i.e only when there is a power demand. ( I have not tried it in reverse!).
Also happens in both the 2wd or 4wd setting.
Does the L200 turbo kick in at 1500 rpm by any chance? I'm wondering if it is a turbo bearing or something. The car drives as before, no vibration and no loss of power - but every time the revs hit 1520 under gentle throttle there it is.
Also, does this sound like a "don't drive the car" noise, or a more of a "it will be fine for a while" noise. Obviously I'll take the car to the dealer but can't do that for a few days.
Thoughts appreciated.
Happening at a specific rev range strongly suggests a resonance problem to me. Everything looking clean and new doesn't rule that out.
One way to track this sort of problem is tap the panels and components around the engine and see if you can find anything that has a similar ring to it.
One way to track this sort of problem is tap the panels and components around the engine and see if you can find anything that has a similar ring to it.
Duratecbuh said:
I have the same truck, with the exact same problem.
Like you, I've tried most of the obvious ideas like loose heatsheild etc.
Please keep me updated on what the dealers says! I'd pretty much decided it was an aux belt tensioner, but YMMV
Interesting - same noise at the same revs as well? Like you, I've tried most of the obvious ideas like loose heatsheild etc.
Please keep me updated on what the dealers says! I'd pretty much decided it was an aux belt tensioner, but YMMV
I’ve been experimenting with mine, seems to only happen at speeds above about 35mph. It certainly doesn’t make any noises when stationary.
I’m intending to get underneath it and have a proper look if the weather ever calms down. Sideways sleet kind of put me off today!
First thought was heat shields but the short rev range doesn’t make and sense.
Edit.
Just hear back from an L200 Facebook group, one of the guys is a Mitsubishi mechanic and recons it’s the heatshield on the front exhaust pipe. You need to drop the under tray for access.
I’m intending to get underneath it and have a proper look if the weather ever calms down. Sideways sleet kind of put me off today!
First thought was heat shields but the short rev range doesn’t make and sense.
Edit.
Just hear back from an L200 Facebook group, one of the guys is a Mitsubishi mechanic and recons it’s the heatshield on the front exhaust pipe. You need to drop the under tray for access.
Edited by Speed addicted on Wednesday 23 February 21:09
Slight thread revival.
Did anyone figure this out? Now the weather is better, I've just spent two hours under my truck and I cannot fathom what it is. However, after my investigations, I'm now 99.99% it's nothing to do with a heat shield.
It feels like it's from the offside of the engine bay. Which unfortunately is where the turbo and associated parts are located. I'd describe the problem sound as a Rasp, more than a rattle.
I half wonder if it's Turbo wastegate actuator related.
Did anyone figure this out? Now the weather is better, I've just spent two hours under my truck and I cannot fathom what it is. However, after my investigations, I'm now 99.99% it's nothing to do with a heat shield.
It feels like it's from the offside of the engine bay. Which unfortunately is where the turbo and associated parts are located. I'd describe the problem sound as a Rasp, more than a rattle.
I half wonder if it's Turbo wastegate actuator related.
Edited by Duratecbuh on Friday 6th May 13:17
AndyG71 said:
Mine started doing this yesterday 1520 rpm under load, sounds like a rasp ( bit like water hitting the arches in wet weather). Sounds like it is coming from turbo side of engine. Anyone with same problem got an auto or manual, mines an auto. Any new discoveries?
Mine is also auto, I thought it had stopped doing it for a while but it’s back. AndyG71 said:
Mine started doing this yesterday 1520 rpm under load, sounds like a rasp ( bit like water hitting the arches in wet weather). Sounds like it is coming from turbo side of engine. Anyone with same problem got an auto or manual, mines an auto. Any new discoveries?
Auto here also. Still none the wiser!
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