Egr Open Cycle Ratio

[PICASSOCONVERT]

I ran Lexia this morning to identify the cause of an "antipollution fault" warning which was "Exhaust gas recycling circuit. Amount of air measured lower than the setting".

 

In Main Parameters 2 there was the following information:

 

EGR Open Cycle Ratio 95%

EGR Throttle Open Cycle Ratio 95%

 

Does anyone know if these values are correct or in error?

 

I will be starting my search for split hoses etc in the morning!

 

David

 

PS Why do these things always occur a few days before my MOT expires?

[paul.h]

Not suggesting this applies in your case but many people do not worry too much about checking their cars until forced by the MOT and then it will get serviced and checked over. So often problems come to light at the last minute.

[PICASSOCONVERT]

Hello paul.h - thanks for your reply. I do try to keep on top of any problems with my car as they occur and look at preventative maintenance where possible (as my posts on this forum show), as I would like to drive my C5 for as long as possible because it's a great car and I wouldn't know what to replace it with.

 

In this case the problem was simple - the "new" piece of vacuum hose I fitted about a year ago between the EGR diaphragm and the black plastic tube had split (which was the cause of the problem the first time round). Replaced with the same hose temporarily and faults cleared with Lexia.

 

The "new" hose came from eBay and on close inspection appears to be vintage stuff fit only for the bin. My friendly MOT/service garage should cut me a bit of good stuff to fit next week.

 

David