:crying: :crying: My car has the same problem as another imported GDI. The car starts fine and idles perfectly. It even revs up to about 2000 rpm without any problem. From there onwards the engine cuts power and power is lost to the point that the car reves. When the car is in gear, slight accelaration is possible but any demand to get the vehicle moving, the engine looses power completely toa point where it struggles to move. I have replaced the following: fuel pump, spark plugs, a censor in the exaust and of course all the unleaded fuel. They also cleaned the other censors in the exaust and also the air-intake. The car still does the same after all of this. Does anyone know what else could be the problem here?

If your saying that the engine revs Ok but doesnt move very well, then maybe it's your geabox or running gear or brakes....
If your saying the engine revs poorly, does it misfire or run smoothly? and is it the same with the air-cleaner removed?

We have tested the brakes and the ABS censors, as we believe that this could also send a message to the computer to cut the revs. The gearbox is a different issue, when the revs drop, the gears do not change down as momentum is lost. It does not misfire while idling. The situation is similar even without the air cleaner.
Do you anthing about the stepper motor and if this could be the problem?

so when the engine losses power, it doesn't miss-fire, but just doesn't rev? even though you have your foot on the accelerator?
I take it that it does keep running?
have you checked for error codes?

sorry don't know anything about stepping

There are no error codes on the system. What has started to happen now is that the car backfires and smoke comes from the exaust, this is recent when it started to tun rich. The car has no power at this stage for driving. I am looking at replacing the ecu and air-intake. Any ideas why the car would now be smoking? <_<

It seems a bit difficult for me to understand what your car is doing.

Depending on the colour of your smoke (blue or black), it could mean valve adjustment/timing, carburetter adjustment or a worn engine or something as simple as a dud spark plug!

If you have checked all the obvious things it then sounds like a faulty ECU as this was a common problem with the GDI's. Check out the website below as they may be able to help.

Jim


http://tunemycar.com/index.html

I had the ECU exchanged for one that did not give any problems, but I still sat with exactly the same situation. I would know a bit more tomorrow when some more electronic specialists have a look at the car. Are you aware of any altitude affects on the ecu or the car? It seemed to not have this problem at sea level.

The ECU will adjust the throttle settings for the altitude based on what I believe is the Oxy sensor (ie less O2 at higher altitudes). If the engine is running better at sealevel than this is an important observation to finding the problem. You may have an intermittant problem with the sensor or possibly the selinoid which would control the throttle settings. I'm not that familiar with the controls and am only making an educated guess.

Good luck and let the rest of us know what you find.

Jim

To keep you up to date, the problem persists. I now have had the cat conv removed and an uni-chip installed. No change. My next attemp is to replace the hydrolic fuel pump as we now discovered that the fuel pressure is low when the car heats up and thus the pump not performing as well as when cold. It has been over a month now and my Paj has never been the same again. :(

:D :D I have my Pajero again!! The probelm was that the hydrolic fuel pump had two tiny filters fitted into the inlet and the fuel return socket. I removed these two filters and installed a normal fuel filter in the main supply line. It worked and the car is running perfectly again, on all speeds with improved fuel comsumption. This has been a long road solving this and thanks to all that assissted. :clap: