Black smoke and EGR - Renault Forums :: Independent Renault forum

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post #1 of 3 (permalink) Old 5th August 2007 Thread Starter
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Black smoke and EGR

HI all. HAd a problem with lots of black smoke on my 03 Laguna so though I'd add my experience.

As usual, loads of black smoke on acceleration and puffing when surging at constant speed. Took advice from the forum and removed the coal in the EGR but made little difference. Got me thinking as to why the EGR would be sooted up in the first place but befroe I could investigate it developed a loud hush when the turbo was running.

Long story short, took it to the dealer who saud the hush noise was because the intercooler was split in half because the computer was over boosting and overfueling. New intercooler, remapped ECU and all fine and dandy, if a little slower.

Must be a common problem though as new intercoolers have reinforced banding to stop them splitting.

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post #2 of 3 (permalink) Old 6th August 2007
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Hi Duncan,

Good post should help other members, take a look at this thread, you not the only one to have that problem.......

Laguna - hesitating, black smoke and swollen intercooler

A problem well stated is a problem half solved !
Currently in davesss's garage:
2002 Laguna Sports Tourer 1.8 Dynamique Moondust VF1KGOB, Fiat Siecento Micheal Schumaker, Kawasaki KLE M/Cycle and a cheap Mountain Bike.

Last edited by Pat.w; 27th May 2010 at 07:32 PM.
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post #3 of 3 (permalink) Old 6th August 2007
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Thanks. I'm not sure why the intercooler isn't an OTS job like the EGR pipe? Spose it would cost Renault too much money to fess up and get it sorted ...
Currently in bpowell555's garage:
2002 Renault Laguna II 2.2dCi Initiale, 1990 E30 325i Touring (Bavarian Tigzwerken Express)
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black , egr , smoke

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