E320 Cdi year 2000 Limp Home mode

rchollebon

New Member
Joined
Dec 30, 2012
Messages
4
Reaction score
0
Location
Twickenham
Your Mercedes
E320/2000/3226cc
Hi, my E320 Cdi (135000 miles) had from new (2000) always been great until recently decided to go into limp mode, took to an indi got the faults cleared and then read again, the full fault code is P1470-008 Charge pressure control Open circuit in wiring signal wire.
So far I have chaged the MAF sensor and the pressure sensor (i presume it is as it is on the inlet manifold, today I found another sensor on the inlet manifold which I presume measures charge temp, this I cleaned with brake cleaner, the car is now sometimes ok ish but not as quick as normal any pointers? thanks in advance
 

mersum1es

Senior Member
Joined
Sep 25, 2010
Messages
2,353
Reaction score
427
Location
Finland
Your Mercedes
W212/-09/350CDI, W219/-07/320CDI, EX:W220/-01/320CDI, EX:W211/-04/320CDI, EX:W210/-01/270CDI
If fault code is right (was it tested with star?), it points to the turbo control actuator. Check it...
 
OP
R

rchollebon

New Member
Joined
Dec 30, 2012
Messages
4
Reaction score
0
Location
Twickenham
Your Mercedes
E320/2000/3226cc
  • Thread Starter
  • Thread starter
  • #3
Thanks for your time, I presume the fault code is accurate the guy gave me the print out and it is a star read out sheet, but was not keen on the work as if he was puzzled! where do I find the turbo actuator and how do I test it? is it something I can replace?
 

Naraic

Moderator
Joined
Mar 4, 2010
Messages
10,686
Reaction score
1,274
Your Mercedes
2005 CL500.
You need an indie who not only has STAR, but can interpret what it means. Wait for a forum indie to come along and advise before replacing yet another part. (With apologies to mersum1es who may well be correct).
 
A

andy@pcd-ltd

Guest
Just had a look on the star machine there is two checks that can be carried out one is to read the actual value of the charge pressure vacuum transducer.

The other is to check the voltage to the sensor
 

mersum1es

Senior Member
Joined
Sep 25, 2010
Messages
2,353
Reaction score
427
Location
Finland
Your Mercedes
W212/-09/350CDI, W219/-07/320CDI, EX:W220/-01/320CDI, EX:W211/-04/320CDI, EX:W210/-01/270CDI
No problem Naraic! ;)

Turbo actuator malfunction is not rare, so I suggested it...
Here are videos about the actuator movement, you could check if it moves at all (well, in that case it should give some smoke too):
http://www.youtube.com/watch?v=hqCoYB0Dwv0
http://www.youtube.com/watch?v=ZOGDkVZVpVY

My star computer is still stored to the closet during the season feasts so I cannot give more specific hints to the actuator subject (and like said, limp mode could be caused several other things) :)
 
Last edited:
OP
R

rchollebon

New Member
Joined
Dec 30, 2012
Messages
4
Reaction score
0
Location
Twickenham
Your Mercedes
E320/2000/3226cc
  • Thread Starter
  • Thread starter
  • #7
Staring to get there

Thanks for all the pointers, I can move the actuator by hand, however as the car is now in near permanent safe mode reving the engine does not help, I guess I will continue my attempts in the new year. I am determined to understand more about this and fix it(mainly for the satisfaction) also the car is nearing the end of its life with terminal rust which is a great shame as she has been running perfect lately so I am sure everyone will understand why I am not keen to throw a bunch of money at it, Oh and Happy New Year:D
 

cutaresku

Active Member
Joined
Oct 26, 2012
Messages
38
Reaction score
1
Location
RO
Your Mercedes
W210, 2001, OM611
Try to swap the vacuum transducers: EGR with turbo. See if any change. 110 euro new one, just MB.
 
OP
R

rchollebon

New Member
Joined
Dec 30, 2012
Messages
4
Reaction score
0
Location
Twickenham
Your Mercedes
E320/2000/3226cc
  • Thread Starter
  • Thread starter
  • #9
Fault Found

Thanks for all the advice, I will go through how I got there, following the advice that it was likely to be the vacum transducer I bit the bullet to go and buy one only to find out there are 2 on the car (1 for the EGR and one I had not found yet) so back home to find it and then check the extra pipes, it is well hidden under the vacum tank, stripped all this off checked pipes etc and then began to understand how it all works, as there are 2 similar transducers on the car I took both and checked the coil values and presto the turbo one is open circuit. Off course the parts department is shut on by then so will find out for certain tomorrow. A sincere thanks to everyone for the advice recieved, it was a fun journey and the old girl should chug on for a bit.
 

BAZZER1

Senior Member
Joined
Jul 9, 2011
Messages
1,542
Reaction score
7
Location
FERNDOWN DORSET
Your Mercedes
E320cdi AVANTGARDE SELECT
Well done Mate, its always satisfying when you can do the job yourself and learn more on the journey, also good tips for other Forum Members.
Best wishes
BAZZER1
 

mick wakelin

New Member
Joined
Jan 10, 2013
Messages
3
Reaction score
0
Location
Sutton, Surrey
Your Mercedes
E320 cdi Estate 2001
rchollebon, Would you be prepared to assist me with a very very similar problem I am having with my 2001 E320 cdi . I work very close to Twickenham and am more than happy to pay for your time if you can point me in the right direction. I hope you don't mind me asking..Thanks to mersum1es for the link to this forum..
 

mick wakelin

New Member
Joined
Jan 10, 2013
Messages
3
Reaction score
0
Location
Sutton, Surrey
Your Mercedes
E320 cdi Estate 2001
A brief summary of my similar problem. E320 cdi 2001 Estate
Chaps. I have just joined this site and this is my 1st posting. I have exactly the same problem, I have taken it to a Merc specialist who has read the codes and I'm getting:-
P2200, P1470 & P1222. I have changed the MAF, the Merc man has supposedly checked the EGR valve, I have made and fitted the EGR shunt although there was no smoking from it so this may have been un neccesary. The car is in great condition, changes gear perfectly, it's done 120K and was a pleasure to drive but now it seem OK when driving around town but on a motorway especially whilst going up a gradient it struggles to get to 80 MPH. When driving in town if I floor it I get the EPC light come on. My Merc man thinks it is a blockage in some pre cat filter..?.. but the codes kind of indicate turbo actuator or pedal position sensor. When driving normaly and you take you foot off the gas you get a little "phst" noise (wastegate or something, I know nothing about diesels) but when going up a hill this "phst" noise happens all the time and the car loses power..any help would be SO greatly received. Can anyone recommend a good independent Merc man near Sutton (Surrey).
Many thanks.
Mick
 

giorgio 72

New Registration
Joined
Dec 31, 2014
Messages
1
Reaction score
0
Location
guildford
Your Mercedes
e 320 2004 320cdi
so i had the same problems,after starting abt.10 minutes driving droped to limp mode and push me to stop and turn the ignition of then start again,witch means the computer give a new signal to the engine and the car runs ok for few more minutes but she lost power again.So i did ask few mecanics and they connect the computer to tester,all the same results:tubo charger fault, y100/1 code. I did ordered a new turbo unit but i had a thought to add injector cleaner before i start the big job,and miracles happened,no more limp mode,the engine get back to life,smooth,strong pull as a train.So guys do the cleaning job befor you spend mega many on turbo charger.!!!
 
Last edited:


Comand (Europe) Ltd are the leading specialists in supplying and fitting Comand, Linguatronic, Media interface kits, UHI phone, IPod interfaces and much more.
Top Bottom