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post #11 of 13 (permalink) Old 6th August 2006
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I agree completely with what Horatio says, in addition check out the engine oil , it should along with the oil filter have been replaced, and still look pretty new.

If the old oil is still in there its carrying all the crud and
sh!tte around the engine from the last turbo blow out.
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post #12 of 13 (permalink) Old 8th August 2006 Thread Starter
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Originally Posted by Horatio
I believe this can happen if they just replace the turbo . Often turbo failure is a symptom of a failure elsewhere, and if you fit a new turbo , the fault shreds the new one too. My memory's a bit sketchy and I don't have time to dig around at the moment, but as I recall, at the very least you're supposed to clean the EGR valve and inspect (preferably replace) the intercooler.

There's also the possibility that they didn't check the oil feed to the turbo or follow the correct running-in procedure when first starting it up. In any case, it sounds like the repairer has botched the job, so I'd bounce this one back to them and expect it sorted FOC.
Thank's Horatio, the car is indeed back at the gararge that fitted the turbo . They are going to speak to a tech at renault to discuss the issue so i am eagerlly awaiting the verdict. I have a feeling that it will be simmilar to yours!!
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post #13 of 13 (permalink) Old 28th November 2006
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I've had exactly the symptoms you are talking about with my Laguna 2.2dci - varying power, smoke, and a death rattle from underneath. ATS Euromaster diagnosed the cat (400 to replace through them), as you could stop the rattling noise simply by holding it. I've had excessive smoke since i got the car, and tried having the injectors cleaned out, using stp, and the often recommended 'giving it a good flooring'. All this seems to do is bury the car behind in a cloud of smoke, before going back to the usual embarrassing smoking.

As the car has done 91k, and so is due for the 90k service, and needs the tyre sensors reprogramming and the back wiper replacing, is it time to just cut my losses? (and avoid a large bill)

Will replacing the cat have any effect on the smoke coming out the exhaust?

If there was a problem with the turbo , what else would i notice besides the occaisional power fluctuations?
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