NEW turbo alternatives?

EmilysDad

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Every now & then when I boot in in my R320 R Class it just judders & kangaroos. Sometimes just backing off sorts it but other times requires ignition off and start again. The car is at present at a Merc specialist where he reckons it's a sticking variable turbo and the cure is a new one (& a new inlet port motor while they're there) ..... obviously covering themselves by quoting new parts from Mercedes.
Grand total of around £2500.
It's not that I can't find the cash, but that's a lot of money to spend on an 07 car.
Other than a box of Swanvestas ..... any suggestions? Either on alternatives or alternative diagnosis
TIA
 

bob 6600

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Larkone

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Had something similar on my W219 320 CDi - fixed it by removing the turbo actuator motor, opening it up and cleaning the gears of all of the black carbon from the electric motor. Then lubed the gears with a good heat resistant dry lube. Never kangarooed again and pickup was so much better. Once the actuator motor is off it is then easy to check if the vanes are sticking in the turbo. Took me less than half an hour to complete the job

You cannot buy the actuator motors separately because they are calibrated to the turbo but you can buy new electric motors, gears and clips should they need changing - they can be found on the 'bay.

Hope that helps.
 
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EmilysDad

EmilysDad

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Had something similar on my W219 320 CDi - fixed it by removing the turbo actuator motor, opening it up and cleaning the gears of all of the black carbon from the electric motor. Then lubed the gears with a good heat resistant dry lube. Never kangarooed again and pickup was so much better. Once the actuator motor is off it is then easy to check if the vanes are sticking in the turbo. Took me less than half an hour to complete the job

You cannot buy the actuator motors separately because they are calibrated to the turbo but you can buy new electric motors, gears and clips should they need changing - they can be found on the 'bay.

Hope that helps.

I did that a few months back .... didn't make any difference. I didn't feel any evidence of it sticking at the time, but that doesn't mean it never sticks :confused: I have heard that the actuators fail
 
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EmilysDad

EmilysDad

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Talk to http://www.theturbocentre.co.uk/new-exchange-turbos and see if they can help. I had one of their turbos on my Defender and it was faultless.

Thanks :)

A lad brought a kit into work & the turbo from his Alpha. It was a piece of p1ss to replace the spool in it, that was variable too & if mine is anything like his, I struggle to see how they'd stick ..... the actuator turned a ring that all the vanes were connected to .... dead simple
 
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LostKiwi

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Thanks :)

A lad brought a kit into work & the turbo from his Alpha. It was a piece of p1ss to replace the vanes in it, that was variable too & if mine is anything like his, I struggle to see how they'd stick ..... the actuator turned a ring that all the vanes were connected to .... dead simple
Yeah they are pretty simple. They stick when they get a carbon build up behind the vanes or the actuating ring.
It shouldn't be too difficult to strip the vanes, clean it all up and reassemble.
 

om613

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VNT mechs are all the same.
As they wear, the increased clearances allow carbon residues to build up.
They can be de-coked by a couple of methods but clearly, neither are a long term fix.

That's 2 duplicates to my two replies today...
 

Craiglxviii

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Every now & then when I boot in in my R320 R Class it just judders & kangaroos. Sometimes just backing off sorts it but other times requires ignition off and start again. The car is at present at a Merc specialist where he reckons it's a sticking variable turbo and the cure is a new one (& a new inlet port motor while they're there) ..... obviously covering themselves by quoting new parts from Mercedes.
Grand total of around £2500.
It's not that I can't find the cash, but that's a lot of money to spend on an 07 car.
Other than a box of Swanvestas ..... any suggestions? Either on alternatives or alternative diagnosis
TIA

It sounds awfully like the problems I have had with mine (E320 CDi V6). Suspected turbo problem turned out to be NOT a turbo problem. Phil has reported a rash of exhaust backpressure sensor failures in the market; mine is having that changed now.n Fingers crossed that solves it as it's been a total utter pig to diagnose.
 

V6Matty

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I had this on the 211, ended up being a o2 sensor failing so exhaust sensor would also make sense.
 

Craiglxviii

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I had this on the 211, ended up being a o2 sensor failing so exhaust sensor would also make sense.

I'm hoping it's that. Mind you, if anyone was to have some mouse problems in the transmission it would only be me, so.........
 

LostKiwi

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I'm hoping it's that. Mind you, if anyone was to have some mouse problems in the transmission it would only be me, so.........
You need a working one of these...:
mainecoonhed.png


Oh... hang on... ;)
 

Craiglxviii

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You need a working one of these...:
mainecoonhed.png


Oh... hang on... ;)

The voice works on it alright, she never shuts up! (Like all females..! "Yes dear"!) She had her first kill a fortnight ago too so now she's decided that she is Hunter Cat... The boy also waded in, asserted his dominance and left a freshly-slaughtered mouse in the middle of our rug. Our grey rug. Our... mouse-grey rug.

You'll never guess what happened!
 

Yugguy

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Is it worth stumping up 70-100 quid for one of those carbon cleans?

They claim to cure things like sticky actuators and egr valves.

https://www.eliteenginecarbonclean.co.uk/

I've no experience but it sounds like a good thing in general for an engine so might be worth a punt.
 
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EmilysDad

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LostKiwi

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Just had a call back from them. New/fully returned turbo Inc actuator for a little over £600 ..... sounds about 4 times better than this morning's quote. But that would mean getting my hands dirty :eek:
Got to be worth it for £1800....
 
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EmilysDad

EmilysDad

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Thanks for the other replies.
I'm still kinda dubious it's an actual turbo fault, unless they're very short lived. I've had this problem from time to time ever since I got the car ..... hindsight says I should have taken it back to MB at the time ..... there was only 40k on the clock at the time. Would a turbo really die so soon?
 

LostKiwi

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It would be unusual for a turbo to fail that early unless it had ingested something.
 


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