Pajero Owners Club of South Africa

Hi Guys
This will be my first time i am sharing on this website.
This is my story and hoping if there is any body with info regarding my problem.Coming from Moz 10 kilos form border the turbo on my Pajero 3.2did 2003 blows .There was a noise and then
no power. The engine still ran fine at idling but no power.Managed to crawl back to Pongola.Towed vehicle back home.I stripped out turbo and found exhaust impeller broke loose from the shaft.I purchased
a brand new turbo and fitted it.The car runs fine but seems to lack low down torque.I have since removed cataylic converter,the
intercooler was cleaned when turbo was replaced.oil supply pipes to turbo is clean Can some one shed some light on this.I have spoken to several specialists but no answer is the same.Regards
George

i suspect the new turbo's wastegate is set at lower boost.

Try to confirm with a boost gauge.

If that is the case the fix is easy. Get a manual boost controller valve, install it and turn up the boost until you get a check engine light. Then just turn it back a notch.

Hi Marius
Not sure if you can adjust waste-gate ,the actuator rod is fixed
and not adjustable.Are we talking of the same thing.
Regards
George

GeorgeWilliamBrown wrote:Hi Marius
Not sure if you can adjust waste-gate ,the actuator rod is fixed
and not adjustable.Are we talking of the same thing.
Regards
George

2 things can affect boost.

The wastegate rod (usually it is adjustable but requires turbo removal in some cases - shorter rod = equals more boost.

Diaphragm spring (the softer the spring the lower the boost)

The easiest by far is to get a manual boost controller (good ones are about R250) that keeps the boost out of the wastegate diaphragm until the (adjustable) set boost on the manual bost controller. The plus side with this setup is that it takes less than a minute to lower or raise the boost.

NB : You can only raise up to a point where the ecu will log an error code 49 (overboost) that sends the car into limp mode (with check engine light) until the boost drops below ecu accepted parameters.

To boost further than that you need chips or software upgrades but that may push the turbo past it's mechanical capabilities so I personally won't go there (chipping/software) on a car that I want to be reliable as possible.

Also, any modification on a diesel should be paired with an EGT gauge and boost gauge to be safe IMHO.

George

If I may, how much did the Turbo cost?

Regards

Barry

There are a few standard cliches which we use on this forum:

• down scratch where it does not itch!
• don't fix it if it ain't broken!

I want to add one:

"Don't start fixing until you know what is broken!"

In this case:
What is the actual boost? Have it checked at a workshop, if you don't have a boost gauge. If the boost is incorrect, then find out why.

Is the turbo the exact correct one? There were at least two turbos used on the 4m41 engine.
Is it the variable vane configuration one that was fitted originally? Is the new one the same?

If yes, only then start looking at waste gate configuration etc.

Bostokkelos wrote:George

If I may, how much did the Turbo cost?

Regards

Barry

Hi Barry
I purchased a new turbo and this cost me R11000.00
I did not want a reconditioned one because of the work involved
to strip and replace
Regards
George