The Mitsubishi Pajero Owners Club®

Glent54321

So.. just had a full exhaust change, since having this done i get a high pitched whistle from the turbo at 2000rpm.

This whistle wasn't present before the exhaust change.

Prior to the exhaust change i had the engine management light on, fault codes : 12, 41, 49. So got a replacement Solenoid on order. the car wasn't affected and the light came on randomly.

So...Any ideas whats causing the whistling? I've read on here in previous post about over boost causing whistling and adjusting the 2 Allen bolts. On my car currently. the bolts are as follows:

Top 3/4 of the way screwed out
Bottom 3/4 of the way screwed in

If i need to adjust these, which do i adjust to sort out whistling?

Thanks,

Mike

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peteinchad · Posted: Sun Jul 16, 2017 14:30 Post subject:

If the whistling started after the exhaust change then it is something to do with the exhaust.

I'm not an expert on your model but when I changed my exhaust to a stainless steel one it whistled a bit - turned out to be the joint between the exhaust manifold and the exhaust needed some exhaust sealing paste and the bolts tightening fully.

Don't go adjusting stuff without proof that there is a problem - you need a boost gauge to actually see whether you have overboost - you probably haven't.

Glent54321 · Posted: Sun Jul 16, 2017 14:37 Post subject:

I did suspect the Exhaust also, seen as it started after the exhaust was fitted! I'll speak to the garage who fitted it and ask if they can get up and check the tightness and apply some/more exhaust paste if they haven't already.

The reason i asked about the turbo screws is, when i purchased the car, the chap mentioned having to spend hours sorting out the boost screws! It dosent seem to have any power atm when going up hill, just high pitch whistling and no go!

peteinchad · Posted: Sun Jul 16, 2017 17:30 Post subject:

Glent54321 · Posted: Sun Jul 16, 2017 20:00 Post subject:

is it easy to remove the waste gate for cleaning? or any way of cleaning it in situ? also, any way of getting in to clean the actuator rod instead of giving it a wiggle in and out?

Thanks,

Mike

peteinchad · Posted: Sun Jul 16, 2017 20:19 Post subject:

stevethresh · Posted: Tue May 26, 2020 11:28 Post subject:

I realise this is an old post but I'm hoping the oringinal poster might still get notified. Did you ever solve the problem as I've just run into the same. Replace the back box part of the exhaust and now get a whistling when revving above 2000 rpm.