E320 CDI 2008 Limp Mode

[ian forrest]

My car has been dropping into limp mode for a couple of years now, fixed by stopping and restarting engine. At first problem every couple of months now cannot exit limp mode. Car does drive ok on manual gear change, 7 speed tronic box. Main dealer says it the intake shut-off motor and maybe needs new intake too - wants lots of dosh! Have checked fuse 54 and not blown. Seen some references to oil dripping from turbo onto connector underneath causing ECU error. Does anybody recognize these symptoms? Also interested in the idea of disconnecting connector and bridging two middle terminals with a resistor to fool the ecu!

 

[John Laidlaw]

Welcome Ian, I am going to nominate you for the most patient person in the MB community for putting up with a car which drops into limp mode for the longest time. I'm stunned to be honest
Anyway if I were you in a 2008 car I'd bypass the main dealer and get yourself a Mercedes Independant specialist to look at it, and diagnose it properly. On here you'll get a thousand opinions, maybe even be lucky and hit the exact symptoms and fix. In the end you'll still have to get it fixed, so better to go direct..
(My guess is MAF sensor by the way). Where are you located? Maybe some on here can recommend a good indy to you...

 

[A.J.]

Hi Ian, welcome to the forum. John has given you some wise words there, better to get it done right in the first pace that keep faffing around and ending up hating your E

 

[Botus]

Main dealer says it the intake shut-off motor and maybe needs new intake too - wants lots of dosh! Have checked fuse 54 and not blown. Seen some references to oil dripping from turbo onto connector underneath causing ECU error. Does anybody recognize these symptoms? Also interested in the idea of disconnecting connector and bridging two middle terminals with a resistor to fool the ecu!

if a main dealer has said its the swirl flaps he's probably right, your points are all spot on. your car is at the right age for lots of little bits to cause fun

check this out

http://forums.mercedesclub.org.uk/i...command-not-switching-on.162962/#post-1541230

 

[Wighty]

Yes , the om642 engine is well known for leaking an oily mix that drips from the front of the turbo (an orange seal) , onto the swirl flap motor that sits below it . It's all a bad design , the intake manifolds also tend to clog up with an oily carbon mix from the egr side . As said above a respected Indy who can work at half the labour rate of the main dealer is the way to go .

 

[ian forrest]

Welcome Ian, I am going to nominate you for the most patient person in the MB community for putting up with a car which drops into limp mode for the longest time. I'm stunned to be honest
Anyway if I were you in a 2008 car I'd bypass the main dealer and get yourself a Mercedes Independant specialist to look at it, and diagnose it properly. On here you'll get a thousand opinions, maybe even be lucky and hit the exact symptoms and fix. In the end you'll still have to get it fixed, so better to go direct..
(My guess is MAF sensor by the way). Where are you located? Maybe some on here can recommend a good indy to you...

John - many thanks for swift response. My main dealer at Taunton has diagnosed intake shut-off motor as the cause. Why do you think the diagnostics could be wrong? By the way is the shut-off motor another name for the swirl flap motor referred to in other blogs? Yes, I would appreciate a lead on a Merc indie. in my area if someone can point me in the right direction. I would also be interested to hear from anybody who has done the shut-off motor delete using a resistor. I have got 165,000 on the clock and I don't plan to keep the motor much longer - don't want to spend much - it has given me exceptionally good service though!! Ian

 

[John Laidlaw]

Hi Ian, sorry wasn't necessarily saying the diagnostics were wrong just illustrating a point on garnering opinions over proper diagnostics.Forgive me had a dentist day so a bit grumpy
In your case it does possibly seem your dealer is right...and right on swirl flaps
Avantgarde automotive ( Steve) is probably your nearest Indie

 

[Wighty]

Yes , the inlet port shut off motor is the thing that operates the swirl flaps ....this is the thing below the turbo inlet that gets dripped on .

 

[Botus]

165 k miles, you don't want to keep it much longer and you have tolerated it for 2 years... so a bit you can fit yourself for 20 quid seems like a good idea

from my earlier post....

http://www.ebay.co.uk/itm/Mercedes-...544287?hash=item4b1a39d29f:g:yMUAAOSwcj5ZOYdt

You are purchasing a repair for fault code P2015 or other swirl flap related fault codes on all cars that use the Mercedes OM642 3.0 V6 Diesel engine. This is a common fault on these cars and is caused by oil dripping onto the motor that opperates the swirl flaps in the engine causing the motor to fail and put the car into limp mode. No power and will only rev to 3000rpm. The replacement of the motor involves removal of the fuel rail, injectors, fuel filter, turbo charger etc and aproximately 6hrs labour plus cost of motor. This repair emulates the swirl flap motor and prevents the car going into limp mode restoring power. After carrying out this repair your car will be completely back to normal or possibly better. There are no negative side effects, loss in performance or economy caused by using this repair instead of changing the motor so could also be used as a preventative measure. I run this on my own car so have fully tested it under all driving conditions including towing etc. This is an easy, permanent plug and play diy repair that requires only very basic tools, on most cars only a screwdriver. No mechanical knowledge, cutting of wires or soldering etc required. The repair takes between 5 and 20 min to carry out depending on car/ skill level and could easily be done at the side of the road so even handy just to buy and keep in the car to save being stranded as this problem usually just occurs with no prior warning. Comes as a complete kit with all parts required to complete repair and detailed fitting instructions

 

[John Laidlaw]

^ extremely helpful post there!

 

[Wighty]

165 k miles, you don't want to keep it much longer and you have tolerated it for 2 years... so a bit you can fit yourself for 20 quid seems like a good idea

from my earlier post....

http://www.ebay.co.uk/itm/Mercedes-...544287?hash=item4b1a39d29f:g:yMUAAOSwcj5ZOYdt

You are purchasing a repair for fault code P2015 or other swirl flap related fault codes on all cars that use the Mercedes OM642 3.0 V6 Diesel engine. This is a common fault on these cars and is caused by oil dripping onto the motor that opperates the swirl flaps in the engine causing the motor to fail and put the car into limp mode. No power and will only rev to 3000rpm. The replacement of the motor involves removal of the fuel rail, injectors, fuel filter, turbo charger etc and aproximately 6hrs labour plus cost of motor. This repair emulates the swirl flap motor and prevents the car going into limp mode restoring power. After carrying out this repair your car will be completely back to normal or possibly better. There are no negative side effects, loss in performance or economy caused by using this repair instead of changing the motor so could also be used as a preventative measure. I run this on my own car so have fully tested it under all driving conditions including towing etc. This is an easy, permanent plug and play diy repair that requires only very basic tools, on most cars only a screwdriver. No mechanical knowledge, cutting of wires or soldering etc required. The repair takes between 5 and 20 min to carry out depending on car/ skill level and could easily be done at the side of the road so even handy just to buy and keep in the car to save being stranded as this problem usually just occurs with no prior warning. Comes as a complete kit with all parts required to complete repair and detailed fitting instructions

I can't find this on eBay , I was going to buy it and keep it incase of breakdown . Not sure where the post has gone ?

 

[Botus]

that's odd was there last weekend, sold 1 had 4 left it ended 21 July could try and contact




Seller information Dumfries, United Kingdom eBay item number:
322562544287
jer310_0 (1110

)
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