Many moons ago my 2008 2.0 TDi CR vRS went into limp mode and i wast told it was the EGR valve or maybe even the cooler by the garage (cant remember the code i was given as its well over a year ago!) but they couldnt be sure without further investigation. In my wisedom i just took off the EGR and cleaned it best i could at work and put it back on to get me through to pay day.

 

The issue never occured again, i even expected to have it failed after i had the "emissions update" applied but its been fine - I have now had the software reveresed after VW/VAG cashed out and paid me for the full fuel system the update cost me - but i digress!

 

So not a problem until last night when the coil light came on the car went into limp mode. I was sat at the traffic lights so simply turned it off/on and everythings run fine since. I ran the very basic code reader i had available to me over it and theres nothing showing up, it even says EGR system 'OK'? I will try and get someone at my usual garage to see if they will scan it tomorrow - if any major work needs doing itll go to them anyway.

 

The reason im asking on here is:

 

1. I had to top up my coolant last week, something i rarely had to do before, i did see something suggesting that could indicate a leak in the EGR cooler? - can any one shed light on this?

2. MPG is down, ive also be told that could be an effect of a failing EGR valve?

 

Any help or advice gratefully recieved - what should i be looking for?

A bit late now, but getting the initial fault code would have been key. Assuming the code was directing the garage to the EGR, combined with the fact you're losing coolant does very much support a leaking EGR cooler.

 

There can be a number of reasons for reduced fuel economy, it often drops as winter approaches as the forecourts begin rolling out the winter diesel (additional ingredients to prevent freezing) which is well documented to adversely effect fuel economy.

 

Did you ever get to the bottom of the fault?