Mark1974
Member
- Joined
- Nov 24, 2020
- Messages
- 22
- Reaction score
- 24
- Location
- Carlow, Ireland
- Your Mercedes
- W205 2015 C180 bluetec 1.6 Diesel
Hi All
Apologies for long winded chronological list below.....Effectively car shaking when idle, especially at cold, awful clatter accelerating between 1500-2000 rpm in any gear ...
Details of all work I've done so far .. rang a Mercedes Independent specialist today May 4th 2023 Hopefully they can help but thought I'd checked here. Based in South East Ireland.
Time Period:
To Day 1: EML : Checked Code : BackPressue Sensor Fault...Cleared ...fine
To Day 2: Car 'Pulls Back' as if something choking engine, then surges forward ...all ok
To Day 3: Start Car Cold > Engine Shaking; Car Shaking but Rev Counter OK, Smell of Fuel / Exhaust , Rev Engine All OK, Drive ...Serious Injector Clatter or Pinging From Engine. No EML , Hand Held Scanner,
nor XENTRY Clone Software Codes.
BUT Software showing AT IDLE:
Injectors >9 mg/stroke and as high as 13 mg/stroke at idle, improves when driving ; Correction Values Cyl 1,3,4 ALL MINUS - adding to Cylinder 2 at +5.00 mm^3 ;
Low Pressure EGR at 40%, Air Mass at idle 20-22 kg/hr. No EML , Hand Held Scanner, nor XENTRY Clone Software Codes.
To Day 7: Check BackPressue Sensor, Damaged and Thin Pipe Blocked. Remove and Clear Thin Pipe and New Sensor
NO CHANGE: Car still shakes, Rev counter static, Injectors >9 mg/stroke and as high as 13 mg/stroke at idle, improves when driving ; ; Correction Values Cyl 1,3,4 ALL MINUS - adding to Cylinder 2 at +5.00 mm^3;
Low Pressure EGR at 40%, Air Mass at idle 20-22 kg/hr. No EML , Hand Held Scanner, nor XENTRY Clone Software Codes.
To Day 12: Plug out MAF : All Values come close to within range with minimal Injector Clatter or Pinging from Engine. Day 8>12 : Receive 'Used' MAF from Mercedes Benz Germany
NO CHANGE: Car still shakes, Rev counter static, Injectors >9 mg/stroke and as high as 13 mg/stroke at idle, improves when driving ; ; Correction Values Cyl 1,3,4 ALL MINUS - adding to Cylinder 2 +5.00 mm^3;
Low Pressure EGR at 40%, Air Mass at idle 20-22 kg/hr. No EML , Hand Held Scanner, nor XENTRY Clone Software Codes.
To Day 20: (Was awaiting Injectors) : Remove Injectors.Injectors from Car were badly 'burnt' and 'puddle' of diesel on top of engine. 1 Injector slightly oily. Fit 4 New Bosch Injectors (1 was a Test Injector: Codes still readable on nozzle).Use Clone Zentry to code.
SLIGHT CHANGE: Car still shakes, Rev counter static, down to 7 mg/stroke and as high as 10 mg/stroke at idle, improves when driving ; Correction Values STAY THE SAME = Cyl 1,3,4 ALL MINUS - adding to Cylinder 2 +5.00 mm^3;
Low Pressure EGR at 40%, All Values out of range. Injector Clatter and / or Pinging Remains but not as harsh.
Smell of Exhaust and Fuel near gone. HOWEVER Air Mass at idle 20-22 kg/hr. No EML , Hand Held Scanner, nor XENTRY Clone Software Codes.
To Day 23: Strip down various items and try remove the High Pressure (Uncleaned Exhaust Flow) EGR...Cant get it out of Intake
To Day 26: Strip down various items and try remove the Low Pressure (cleaned Exhaust Flow) EGR...Manage to Remove, slightly carboned ,
gauze into cooler heavier carboned, clean both and reinstall.
A FURTHER SLIGHT CHANGE: Car still shakes, Rev counter static, Injectors >6 mg/stroke and as high as 8 mg/stroke at idle, improves when driving ; BUT This Time .. Correction Values are Intermittent ...
Initially they start at the usual = Cyl 1,3,4 ALL MINUS - adding to Cylinder 2 at +5.00 mm^3
however .... with EGR Actuation & EGR Temperature Actuation ...Values correct to= Cyl 1,3,4 ALL MINUS (some as near as 0.04 mm^3) - adding up to Cylinder 2 at +.86 mm^3 to +1 mm^3 and Air Mass at idle 25+ kg/hr.
BUT ALL RESETS post switching engine off and correction values back to Cyl 1,3,4 ALL MINUS - adding to Cylinder 2 at +5.00 mm^3
Low Pressure EGR at 0%, Injector Clatter and / or Pinging Remains same as last time but not as bad as initially.
Smell of Exhaust and Fuel near gone. HOWEVER Air Mass back at idle 20-22 kg/hr. No EML , Hand Held Scanner, nor XENTRY Clone Software Codes.
To Day 28: Try to extract LOW Pressure EGR Temperature Sensor to see if Carboned up (although range appears ok). This was done after
one particular test drive where excessive white vapour from exhaust was noted while driving. NO Loss of any Coolant. White vapour episode has not occured again.
However Cannot extract Sensor. May also have damaged 'bolt'. Extract Throttle Body and Clean. Extract MAP and IAT Sensor (ver badly coated in Oil).
Also noted Oil in Turbo Outlut pipe to Intercooler. Intercooler after 8 Years must be quite Messy.
To Day 31: Further Xentry Monitoring:
(A) Found Author Data : IMA section which states the 1st Injector Code is FALSE , if I switch Codes , Its always the 1st Code,
even if I put in Old Codes. HOwever ALL Codes received a correct tick mark when transferred to ECU.
(B) In the same Author Data Section: Switching ON the Exhaust Flap Sensor immediately 'raises' the Air Mass at idle to 30+ kg/hr and all shaking stops.
All Injector Quantities and Correction Values go to near perfect. This then stops post 30-45s or when Test completes.
Day 31+ : Plugged out MAF. Driving Car, no shaking, very very slight Injector Clatter / Pinging but obviously EML and no power.
Overall: No EML , Hand Held Scanner, nor XENTRY Clone Software Codes.
BUT
(A) Injector Coding possibly not Correct
(B) Air Mass Sensor (Replacement and Original) or ECU and Air Mass out of sync
(C) High Pressure EGR Stuck at 0% (it does actuate) ... but cant get it out of Intake
(D) Temp Sensor in Low Pressure EGR : Carboned Over ? Not requesting opening of Valve and/or not in Tandem with Exhaust Flap?
(E) Exhaust Flap : Stuck partially Open?
(F) The Engine is F**^%%$$
Any views? Thanks
Apologies for long winded chronological list below.....Effectively car shaking when idle, especially at cold, awful clatter accelerating between 1500-2000 rpm in any gear ...
Details of all work I've done so far .. rang a Mercedes Independent specialist today May 4th 2023 Hopefully they can help but thought I'd checked here. Based in South East Ireland.
Time Period:
To Day 1: EML : Checked Code : BackPressue Sensor Fault...Cleared ...fine
To Day 2: Car 'Pulls Back' as if something choking engine, then surges forward ...all ok
To Day 3: Start Car Cold > Engine Shaking; Car Shaking but Rev Counter OK, Smell of Fuel / Exhaust , Rev Engine All OK, Drive ...Serious Injector Clatter or Pinging From Engine. No EML , Hand Held Scanner,
nor XENTRY Clone Software Codes.
BUT Software showing AT IDLE:
Injectors >9 mg/stroke and as high as 13 mg/stroke at idle, improves when driving ; Correction Values Cyl 1,3,4 ALL MINUS - adding to Cylinder 2 at +5.00 mm^3 ;
Low Pressure EGR at 40%, Air Mass at idle 20-22 kg/hr. No EML , Hand Held Scanner, nor XENTRY Clone Software Codes.
To Day 7: Check BackPressue Sensor, Damaged and Thin Pipe Blocked. Remove and Clear Thin Pipe and New Sensor
NO CHANGE: Car still shakes, Rev counter static, Injectors >9 mg/stroke and as high as 13 mg/stroke at idle, improves when driving ; ; Correction Values Cyl 1,3,4 ALL MINUS - adding to Cylinder 2 at +5.00 mm^3;
Low Pressure EGR at 40%, Air Mass at idle 20-22 kg/hr. No EML , Hand Held Scanner, nor XENTRY Clone Software Codes.
To Day 12: Plug out MAF : All Values come close to within range with minimal Injector Clatter or Pinging from Engine. Day 8>12 : Receive 'Used' MAF from Mercedes Benz Germany
NO CHANGE: Car still shakes, Rev counter static, Injectors >9 mg/stroke and as high as 13 mg/stroke at idle, improves when driving ; ; Correction Values Cyl 1,3,4 ALL MINUS - adding to Cylinder 2 +5.00 mm^3;
Low Pressure EGR at 40%, Air Mass at idle 20-22 kg/hr. No EML , Hand Held Scanner, nor XENTRY Clone Software Codes.
To Day 20: (Was awaiting Injectors) : Remove Injectors.Injectors from Car were badly 'burnt' and 'puddle' of diesel on top of engine. 1 Injector slightly oily. Fit 4 New Bosch Injectors (1 was a Test Injector: Codes still readable on nozzle).Use Clone Zentry to code.
SLIGHT CHANGE: Car still shakes, Rev counter static, down to 7 mg/stroke and as high as 10 mg/stroke at idle, improves when driving ; Correction Values STAY THE SAME = Cyl 1,3,4 ALL MINUS - adding to Cylinder 2 +5.00 mm^3;
Low Pressure EGR at 40%, All Values out of range. Injector Clatter and / or Pinging Remains but not as harsh.
Smell of Exhaust and Fuel near gone. HOWEVER Air Mass at idle 20-22 kg/hr. No EML , Hand Held Scanner, nor XENTRY Clone Software Codes.
To Day 23: Strip down various items and try remove the High Pressure (Uncleaned Exhaust Flow) EGR...Cant get it out of Intake
To Day 26: Strip down various items and try remove the Low Pressure (cleaned Exhaust Flow) EGR...Manage to Remove, slightly carboned ,
gauze into cooler heavier carboned, clean both and reinstall.
A FURTHER SLIGHT CHANGE: Car still shakes, Rev counter static, Injectors >6 mg/stroke and as high as 8 mg/stroke at idle, improves when driving ; BUT This Time .. Correction Values are Intermittent ...
Initially they start at the usual = Cyl 1,3,4 ALL MINUS - adding to Cylinder 2 at +5.00 mm^3
however .... with EGR Actuation & EGR Temperature Actuation ...Values correct to= Cyl 1,3,4 ALL MINUS (some as near as 0.04 mm^3) - adding up to Cylinder 2 at +.86 mm^3 to +1 mm^3 and Air Mass at idle 25+ kg/hr.
BUT ALL RESETS post switching engine off and correction values back to Cyl 1,3,4 ALL MINUS - adding to Cylinder 2 at +5.00 mm^3
Low Pressure EGR at 0%, Injector Clatter and / or Pinging Remains same as last time but not as bad as initially.
Smell of Exhaust and Fuel near gone. HOWEVER Air Mass back at idle 20-22 kg/hr. No EML , Hand Held Scanner, nor XENTRY Clone Software Codes.
To Day 28: Try to extract LOW Pressure EGR Temperature Sensor to see if Carboned up (although range appears ok). This was done after
one particular test drive where excessive white vapour from exhaust was noted while driving. NO Loss of any Coolant. White vapour episode has not occured again.
However Cannot extract Sensor. May also have damaged 'bolt'. Extract Throttle Body and Clean. Extract MAP and IAT Sensor (ver badly coated in Oil).
Also noted Oil in Turbo Outlut pipe to Intercooler. Intercooler after 8 Years must be quite Messy.
To Day 31: Further Xentry Monitoring:
(A) Found Author Data : IMA section which states the 1st Injector Code is FALSE , if I switch Codes , Its always the 1st Code,
even if I put in Old Codes. HOwever ALL Codes received a correct tick mark when transferred to ECU.
(B) In the same Author Data Section: Switching ON the Exhaust Flap Sensor immediately 'raises' the Air Mass at idle to 30+ kg/hr and all shaking stops.
All Injector Quantities and Correction Values go to near perfect. This then stops post 30-45s or when Test completes.
Day 31+ : Plugged out MAF. Driving Car, no shaking, very very slight Injector Clatter / Pinging but obviously EML and no power.
Overall: No EML , Hand Held Scanner, nor XENTRY Clone Software Codes.
BUT
(A) Injector Coding possibly not Correct
(B) Air Mass Sensor (Replacement and Original) or ECU and Air Mass out of sync
(C) High Pressure EGR Stuck at 0% (it does actuate) ... but cant get it out of Intake
(D) Temp Sensor in Low Pressure EGR : Carboned Over ? Not requesting opening of Valve and/or not in Tandem with Exhaust Flap?
(E) Exhaust Flap : Stuck partially Open?
(F) The Engine is F**^%%$$
Any views? Thanks
