renault 1.9 dci missfire
Discussion
Just had the same problem on a Laguna dci. the engine has a slight hesitation at between 1600 - 2000 rpm.
There is a lot of information regarding this problem on the Renault owners forum and also Parkers forum.
They suggested first to clean the EGR valve. Sticky carbon deposits build up in the valve and prevent it from closing properly.
another thing to check is for leaks on the intercooler or pipework. Ours was a broken housing on the damper valve where the intercooler connects to the inlet manifold.
Last thing, unplug the MAFF sensor and see if the problem disappears. If it does the sensor needs cleaning.
Hope this helps.
There is a lot of information regarding this problem on the Renault owners forum and also Parkers forum.
They suggested first to clean the EGR valve. Sticky carbon deposits build up in the valve and prevent it from closing properly.
another thing to check is for leaks on the intercooler or pipework. Ours was a broken housing on the damper valve where the intercooler connects to the inlet manifold.
Last thing, unplug the MAFF sensor and see if the problem disappears. If it does the sensor needs cleaning.
Hope this helps.
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