Rammie1884 Posted July 13, 2016 Report Share Posted July 13, 2016 Hi guys, Myself and my local BMW Indie garage are pulling our hair out and hoping someone can help on here which would be very much appreciated? i have a 330Ci with 170k miles on clock. Engine reconditioned about 5k miles ago and all was well. The EML came on recently so booked into indie garage with a good rep to resolve. Diagnostics showed various faults which pointed to the O2 sensors and probable VANOS fail. The sensors were changed and a recon VANOS unit fitted. Fault was cleared briefly but then came back with same fault codes (which I can't remember off hand). Symptons are very rough idling from cold (after 8 hours left standing). Revs flutter from 500 - 1300 RPMs for a few minutes then return to normal if left but if driven straight away no power and kangaroos up the road. After a few minutes it returns to near normal although power is still down. EML light remains on constantly. CCV was changed about a year ago, MAF removed and car run, cleaned etc, CAM sensor also changed by main dealer. There is a small oil leak from the VANOS gasket which is next to be sorted but I don't think this would cause the problems? I suggested an air leak in intake hose etc but garage said this wouldn't throw up the codes given and wouldn't explain the roughness from cold getting better when warmed up! anyone else experienced these problems or any ideas (garage haven't charged me for second VANOS change so not having me over). Thanks for reading and would greatly appreciate any thoughts. Link to comment Share on other sites More sharing options...
Ragamuffin Posted July 13, 2016 Report Share Posted July 13, 2016 Is your DISA valve fubbered? Unplug it with the engine idling and see if the faint rattling stops, if it does your DISA needs an overhaul. I'm not saying this will give you all the symptoms you have, but it won't help. Link to comment Share on other sites More sharing options...
Rammie1884 Posted July 15, 2016 Author Report Share Posted July 15, 2016 Thanks, I have tried this and all seems ok with the DISA. Link to comment Share on other sites More sharing options...
R2D2 Posted July 18, 2016 Report Share Posted July 18, 2016 Did you check the intake hoses for splits? An air leak at intake would very much throw an EML light and theyre sometimes difficult to spot unless you completely remove them and check them over. While theyre out, whip your idle control valve out as well and give it a clean as grit can sometimes cause problems with the valve mechanism. Rammie1884 1 Link to comment Share on other sites More sharing options...
Rammie1884 Posted July 25, 2016 Author Report Share Posted July 25, 2016 I will do that thanks. Would that cause the problem just from cold though? It runs a lot better when warmed up, almost normal. Link to comment Share on other sites More sharing options...
