Ady

[Ady]

My renault laguna diesel every now and then will suddenly
lose throttle, will make a spluttering sound and will only travel at a snails pace. Putting my foot down to try and clear it only made it feel worse,then suddenly it would burst into life creating a huge black cloud of smoke at the back. The fuel injection system fault warning comes on while this happens but then goes away when i have turned the car off for a while and everything is fine for weeks until it happens again. I have taken it to a local garage and have had the fuel system flushed through. Its not worked!
Any ideas?

 

[ggcton]

I had a similar problem with a vel satis.
After many trips to the renault agents it was finally cured by changing the deisel injector pump.
Gary

 

[Ady]

fuel injection fault

Thanks for the info, I just hate it when renault garages charge £50 just to look at the car, and even get it wrong sometimes!

 

[GREAT UNCLE]

First thing to do is check the egr valve is working, they can stick in the 'open' position and cause lack of power or cutting out at idle.