Hi all, I have a VW Passat 2006 saloon.
We are about to sell it and annoyingly the MIL has come on.
Reading with my ECU reader is revealing
"EGR valve Insufficient flow detected"
EGR is know to be Exhaust Gas Recirculator valve.
Whats the most common reason to cause this? A perished vacuum rubber hose or the EGR valve itself?
Regards,
Stephen.
EGR valve Clogged up with diesel exhaust crud is the most likely.
Interesting if it's a petrol model!
it is in fact a diesel....
so Mr Cheerful, all I need to do is remove EGR valve, dismantle it, clean it, reassemble it and refit?
What should I use as the cleaner for the exhaust crud?
Regards
Stephen
It was a reasonable guess that it was a diesel. The valve is not dismantleable unless you are into serious engineering. The stuff to clean it is sold in car shops as EGR Cleaner spray !! The alternative is to replace it with new (which might be needed anyway)
Oven cleaner seems to work
Some mechanics prefer Mr Muscle Oven Cleaner to EGR cleaner and it is much, much cheaper.
There's EGR on some petrols, too, and it still clogs up... Obviously, not with diesel soot, but it still clogs...
Oh, I know that. It was only the 'diesel' part that I was commenting on.
As Mr C says, the valve itself being clogged is most likely. Do you know what engine you have? Some CR engines have a filter that can block, but this may only be North American ones.
Check the 'outlet' pipe in the manifold where the EGR discharges into is nicely clean, as well as the pipework and EGR valve itself. and the plastic link rod & actuator on the throttle valve. If the rod falls off, and they do, the throttle cant close to increase EGR flow, which sets the code. You'll also notice the engine comes to an abrupt stop when switched off rather than a smooth one.
Tim..
>MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.