A while ago i posted on here with troubles i had with my management light showing. Well i managed to get a guy at a nationwide test centre to scan the codes (which it pulled a good 10 or so) and then clear the codes off... now when i try to get the problem to re-occur low and behold the management light comes on.. after looking the code up (0400) it appears to be the Exhaust gas circulation valve (according to here)
I was wondering if any kind soul could tell me the different between: -
Exhaust gas circulation valve - 0400
Exhaust Gas Re-circulation (EGR) valve - 0403
the EGR valve we took out and cleaned so wouldn't expect it to be this?
p.s. the egr valve was cleaned out with a "plentyful" amount of carb cleaner, however if there is a better method, would appreciate that to.
and also when cleaning it out there is a star bit on the underside of it which is sprung loaded, could this have any bearing on it?