BMW e60 530d howl

[Pvapour]

Trying to get to the route of a power loss issue and clearing other faults, so far

Replaced overdue dpf ( 100k on original from what I can tell from history) power returned after this.

1500km later the power loss returns with a throttle actuator fault, replaced that but loss still there, noticed while live monitoring (Carly app) that engine wasn't getting up to temp so replaced main and egr thermostats ( car is manual so no gearbox thermostat) car now gets to temp but not sure if lack of temp lead to dpf blocked again yet...

Blanked of swirl flaps and plugged vacuum

Now I have a weird howl from engine same as this and a maf code, can't contact guy in vid to ask what outcome was, any thought?

https://m.youtube.com/watch?v=CF6JqGnwJes

[hman]

Thats a typical turbo wear noise.

My e60 525d did the same - it got fractionally louder in the 18 months I had it but it never failed.

When the turbo goes you will know it - the noise is very loud!


Also check the pipes going to the turbo for leaks (although you should hear air escaping if one is not sealing)

Also check your vacuum pipes as leaks can raise many faults.

[TartanPaint]

Very common fault. Turbo is dead. Mine did this, then did it again with the new turbo about 4 months and 4k miles later. The root cause is probably bad oil flow to the turbo, so poor cooling and no lube, which has killed it. You can either rip the car apart trying to find the oil blockage, or replace the turbo and hope it won't happen again (but it will).

I just traded mine in and ran away as fast as I could.

[Pvapour]

Have left all covers off engine for now so everything is easy to get at, are all the vacuum pipes turbo side of engine? Will change the oil separator whilst at it to, if that's clogged then I'm guessing thatd howl as airways became restricted, hoping its not turbo

[hman]

its turbo - no doubt.

[Pvapour]

I'll remove all the ducting so i can get to turbo, read somewhere about checking for play? Any pointers?.

[hman]

https://www.youtube.com/watch?v=guOLHdJJwV4

[Pvapour]

Thanks, if it were on its way out, wouldnt the power loss be consistant?

Mine's intermitant, + i have a cold start issue that feels like theres too much compression for engine to keep running, fires ok but imediatly stalls, 2nd start it tries to stall but just about keeps going and slowly smooths out into a slightly rough idle, as it gets hotter the idle becomes as i should, the ambient temperature is not that low here at the moment

Maybe they are two completely different issues though..

[Pvapour]

Further investigation has revealed its worn but its not causing the intermitant power loss, have done half the vac pipes so far but need some insight on further vac pipes on turbo side..