E90 2.0D No power

ianstevens44 · 07-26-2022, 09:44 AM

Hi I wonder if anyone can help me. My e90 2.0D has lost power and drives like a 1970's ford transit van having to change to 2nd gear to get up hills and the acceleration is really bad. It feels like there is no boost or turbo but there is no noises or smoke from the engine. I used a basis Obd2 scanner a few days ago and noticed that when revving from idle the MAF reading increases but the MAP reading reduces. This seems a bit strange to me so I was wondering if anyone has had this problem or can shine some light on it for me please.

lnxguy · 07-27-2022, 01:22 PM

Map boost actual vs requested and you'll find your problem. You've probably got a massive boost leak. Any codes?

07-26-2022, 09:44 AM	#1
ianstevens44 Registered 0 Rep 1 Posts Drives: BMW E90 2.0D Join Date: Jul 2022 Location: East Grinstead UK iTrader: (0)	E90 2.0D No power Hi I wonder if anyone can help me. My e90 2.0D has lost power and drives like a 1970's ford transit van having to change to 2nd gear to get up hills and the acceleration is really bad. It feels like there is no boost or turbo but there is no noises or smoke from the engine. I used a basis Obd2 scanner a few days ago and noticed that when revving from idle the MAF reading increases but the MAP reading reduces. This seems a bit strange to me so I was wondering if anyone has had this problem or can shine some light on it for me please. Attached Images
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07-27-2022, 01:22 PM	#2
lnxguy Lieutenant Colonel 357 Rep 1,730 Posts Drives: 2009 335D Join Date: Jun 2016 Location: Barrie iTrader: (1)	Map boost actual vs requested and you'll find your problem. You've probably got a massive boost leak. Any codes? __________________ '09 335D
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