had the turbo fail so replaced both turbo and inter-cooler this week now when i drive i have not much power feels like the turbo is not always working and from the back there is a lot of black smoke have i not done something when replacing the turbo i will check all the connections tonight to make sure everything is tight but just wanted to know if there is something that would cause this

Black smoke usually indicates excess fuel not properly burnt. This may also give the symptoms of turbo not working as the power will be less than expected.

Engine needs to measure turbo boost to determine correct fuelling, usually with a pressure sensor. Check any connections to the sensor. Also check for any air leaks, especially between turbo and engine as it would appear that the measured boost is not all getting to the engine.

when i help change a failed/blown turbo on a 1.9 vectra (same engine i believe) all the hoses/pipes where full of oil. it took an good week or so for the black smoke to go.

well just to update most of the smoke has gone was burning oil in the pipes and also bottom inter cooler pipe had come off so one new clip later and all good

Intercooler pipe would be the culprit. Pressure from turbo not reaching engine, but fuel injected represented expected turbo pressure, so overfuelling, black smoke, no power.

Glad its all sorted.

need some more help everything seems to be working fine but the EML light is still on i did a battery off for over 1 hour to try and clear it be it does not want to go. does anyone in the either the Leeds or Goole area have a scanner that can clear the codes and see if there is anything else been reported.

If the fault has been fixed, the light should go out after 3 clear starts of the engine.
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well this is really starting to get to me now i have been through everything and all is working but the light will not go out and if i t try and drive the car above 3000rpm limp mode kicks in if i keep it under that the car drives great no loss of mpg could it be the MAF or EGR valve now playing up

Is the turbo actually turning?

When it is cold, and I mean COLD, not even slightly warm, can you turn it by hand through the intake side?

portland_bill said:

Is the turbo actually turning?

When it is cold, and I mean COLD, not even slightly warm, can you turn it by hand through the intake side?

Click to expand...

Yes the turbo is turning

lack of power

I have a stilo 1.9jtd and last week changed the turbo and inter cooler as they had both failed but now the car will not rev passed 3K have had the fault codes reader on it adn got a p0101 which is MAF so unplugged it and car was back to normal rev all the way to the red i have cleaned but made no change is there anything else i can check to be 100% sure i need a new MAF