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Found 2 results

  1. Babadaddy

    Dpf problems

    Hi everyone Nooby here. Just thought I'd warn of my experience with my beloved 520D Msport. I've owned it since 2016 and done barely 3000 miles. Sounds good ? Don't be fooled. Its just gone back in for its SECOND Dpf fiited after the first one blocked up last summer. The reason ? .... Well that's down to my car doing less than 5 miles per day to work and back !! My trusted technician informs me that these cars (all diesels really) need to be driven, the exhaust needs to get hot and burn the soot from the dpf or it will clog up and suffocate.. He says I should really plan to take it on the motorway at least once a month at 3000rpm for 15-20 mins to burn the ash away. I did not and its cost me over a grand for two new Dpf filters fitted. I'm gonna sell it and get a petrol instead. Hope this might enlighten you guys who are in a similar position to me. Got a bimmer diesel ? LET IT BREATHE AND STRETCH ITS LEGS LIKE IT WAS BUILT FOR.
  2. PeteH30

    Map Sensor Issue?

    Hi, I am new to this forum so hoping someone may be able to help me. I have a 2004 E60 530D with the M57 engine. The problem I have had has been engine rev fluttering between 1100 - 1500 RPM, pitch change to engine tone (intermittent), reduced boost from turbo/ limp home mode (intermittent). All of these problems have become more consistent. I have now done the following; Full Service, cleaned MAF/MAP sensors, Blanked Swirl Flaps, cleaned inlet manifold / intercooler / anti shudder valve / EGR valve / Air intake ducts, replaced vacuum hoses, new battery, injectors serviced, DPF cleaned with fuel treatment. I have also made my own Oil/air separator to put inline to the oil breather feed to the turbo. The BMW cyclonic oil breather filter does not seem to do a massive amount. After all of this the engine still runs lumpy, not able to accelerate and no boost. I unplugged the MAP sensor and the engine instantly smoothes out revs fine. When I unplug the MAP sensor the Turbo variable vane actuator moves and the engine runs fine. When I plug the MAP sensor back in the turbo actuator moves again and the engine runs poorly. I have plugged it in with no fault codes. Can anybody tell me why unplugging the MAP sensor would make the turbo actuator move and the engine run smoothly? I am going to try a replacement MAP to see if the problem goes away. I also unplugged the MAF sensor and the engine seemed to be even more responsive.