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E61 520d m sport. 2007 engine losing power at 3500rpm.

3K views 2 replies 3 participants last post by  hrh1987 
#1 ·
Only had this car 2 weeks!!!!
The day I went to look at it I test drove it around the town and it drove fine.. I paid the man then started the 160 mile journey home.. About 40 miles into the journey home I approached the motorway and give it a bit to accelerate onto the slip road.. I got to about 3500rpm and lost all power and the eml came on.. It then drove fine home as long as I didn't rev above 3000rpm..
I plugged into the scanner and these codes came up
P14a2 and p3264????
I cleared these codes and the eml went off...
I still now have the same problem though but without the eml coming on..
You rev to about 3000-3500 and the car loses all power.. Power them comes back instantly when you let the revs drop back down.. Now I have these codes
449a charge air pressure actuator
483a throttle actuator
3ff1 air mass flow sensor

Can someone please help??? My new car, and it's totally dis heartening me. :-((
 
#2 ·
Most likely it needs a new MAF. You might start by just cleaning it. If you flush out any dust and fluff that might have got in there it may recover. Brake cleaner aerosol is good for this. If that doesn't work you might also be looking at a vac leak so do a tour of the lines.
 
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