535D Problem, help appreciated!

realscot

realscot

realscot

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Ok so I have a 2007 535D in for repair "no power" is the fault

Diagnostic computer is telling me 4180 - Turbine control flap activation

The wastegate on the on the turbo isn't moving at all when revving, is this normal? Now i've checked all the vacuum pipes for leaks and they are all fine. I'm now thinking it may be the pressure converter or some kind of solenoid at fault.

Anyone that had experience with these and can give me some advice would be greatly appreciated.

Engine is the 3.0 single turbo unit.
 
Ok, i'm not a car mechanic or some master technician by any stretch of the imagination, but could it be a fault with the actuator or actuator arm?? The actuator could be stuck closed and if so, i think this means big trouble for the engine/turbo if it's run!

As far as i know (at least on my 335i) the waste gate is closed at idle and is meant to open and close as you rev it?
 
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you can move the actuator arm back and fourth freely, perhaps a little too freely? Hence why I though it was a vacuum issue.
 
If its a 535d it's not a single turbo unit, they were all twin turbo. I had a failed actuator on my 335d which stopped the small turbo functioning and it being totally lacking power.
 
Bloody electronically actuated turbos :(

The problem with the turbos on these is that they have no external "wastegate" as such, and open their variable vanes in order to vent. These get gunked up with soot deposits and then fail to move properly. My 330d had this exact problem.

It's most likely going to be a replacement turbo job.
 
Is someone paying for your expertise here, if so don't tell them you think its a single turbo engine because it isn't and I would run miles away from a garage who told me that :p
 
Well I thought it was twin turbo too, but the guy at parts in BMW Aberdeen told me it was single turbo so I just went with what he said since I figured they knew best. Anyway, the number of turbo's is irrelevant in this case as I think I have found the source of the problem. I tested both of the pressure convertors in the vacuum system and one of them didn't seem to have continuity and from what i've read this can be a reasonably common fault so i've got a new one coming tomorrow at a cost of just over £70.

Fox, I didn't mention that to the customer but then all she cared about was being able to pass transit van's again.
 
realscot said:
Well I thought it was twin turbo too, but the guy at parts in BMW Aberdeen told me it was single turbo so I just went with what he said
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Crazy off the wall idea here but given the car is presumably sat somewhere near you... you could have looked in the engine bay? :p
 
Its ok i'll make sure i'm 100% correct about everything before posting on OCUK forums again. I posted to find out if anyone else had experience with these cars and that particular error code, and only 4 out of 15 posts were people actually trying to help. I forgot what its like on here especially in motors.
The fact that i'm a mechanic doesn't mean I know everything about all cars, yes I can count 2 turbos if i'm looking to count them but as I said that's not what I was under the bonnet to do. I was trying to diagnose lack of power and going with the fault code I had. Since i've never really done any significant engine work to a 535D I figured I'd ask on here since there are a few guys that would really know their stuff especially with BMW's, like fox for example, but instead he and others decided they'd rather take the wee out of me for getting something wrong than actually type something productive.
 
Hmmm if I remember correctly that has something to do with solenoid valves or something like that.

Have you got DIS that can run a test schedule for you? That's very handy to have in a situation like this.

If not have you cleared the codes and gone for a drive and re-read?

I'm not too clued up the the twin turbo diesel engines but that code and actuator sure did make me instantly think of a solenoid....

Edit- just read the pressure converters, fair enough, make sure they're pierberg, you might aswell replace both and replace all the vac pipes with braided hoses and clean the EGR valve out. I assume your swirl flaps are also blanked as the manifold will be coming off. If I remember correctly, in these pressure converters the filters inside get clogged up. On the older onces they used to be sealed with a metal ring, then Pierberg changed the design so it was one sealed unit.
 
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realscot said:
Its ok i'll make sure i'm 100% correct about everything before posting on OCUK forums again. I posted to find out if anyone else had experience with these cars and that particular error code, and only 4 out of 15 posts were people actually trying to help. I forgot what its like on here especially in motors.
The fact that i'm a mechanic doesn't mean I know everything about all cars, yes I can count 2 turbos if i'm looking to count them but as I said that's not what I was under the bonnet to do. I was trying to diagnose lack of power and going with the fault code I had. Since i've never really done any significant engine work to a 535D I figured I'd ask on here since there are a few guys that would really know their stuff especially with BMW's, like fox for example, but instead he and others decided they'd rather take the wee out of me for getting something wrong than actually type something productive.
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I think it must have been a quiet day in Motors, hence half the responses.
 
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