OM642 Turbo Actuator
Thread Starter
Junior Member
Joined: Mar 2016
Posts: 26
Likes: 0
From: Pietermaritzburg
W203 C320CDI Auto
OM642 Turbo Actuator
Hi Guys, my OM642 is giving me uphill.
Some background to my question, I got the Turbo overhauled in April 2019. Came back beautiful and everything working 100%
Now this week car goes into limp with error code P0244 and P2510. I check the wiring inside the actuator no problem, I have another actuator and swop that out and still no go. See the link below for the video.
Do any of you guys had this? I checked fuses, all looks fine. What am I to do next?
Any help into the right direction I will appreciate.
https://drive.google.com/open?id=1-LYfm3T5SdDU-nPX4kYMM94dcV4xvlxR
Some background to my question, I got the Turbo overhauled in April 2019. Came back beautiful and everything working 100%
Now this week car goes into limp with error code P0244 and P2510. I check the wiring inside the actuator no problem, I have another actuator and swop that out and still no go. See the link below for the video.
Do any of you guys had this? I checked fuses, all looks fine. What am I to do next?
Any help into the right direction I will appreciate.
https://drive.google.com/open?id=1-LYfm3T5SdDU-nPX4kYMM94dcV4xvlxR
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
What's the mileage on the engine and why you had turbo rebuild?
The main issue with the flap system is semi-hard build-up around them, what can
-break control rod
-burn the actuator
-freeze whole system.
So if you have high-mileage engine, cleaning the build up is required maintenance.
Dealers replace manifold with new one, what can get pretty expensive, but that is nice DIY job with no cost to the owner.
The main issue with the flap system is semi-hard build-up around them, what can
-break control rod
-burn the actuator
-freeze whole system.
So if you have high-mileage engine, cleaning the build up is required maintenance.
Dealers replace manifold with new one, what can get pretty expensive, but that is nice DIY job with no cost to the owner.
Thread Starter
Junior Member
Joined: Mar 2016
Posts: 26
Likes: 0
From: Pietermaritzburg
W203 C320CDI Auto
The Actuator needs to stay down till you excellerate. When the actuator flips up the tone of the exhaust also change to a deep tone and the mil lights up.
The milage is 189000kms. The turbo shaft was leaking oil, so I had to replace the Turbo Core and vaines.
The milage is 189000kms. The turbo shaft was leaking oil, so I had to replace the Turbo Core and vaines.
Thread Starter
Junior Member
Joined: Mar 2016
Posts: 26
Likes: 0
From: Pietermaritzburg
W203 C320CDI Auto
What's the mileage on the engine and why you had turbo rebuild?
The main issue with the flap system is semi-hard build-up around them, what can
-break control rod
-burn the actuator
-freeze whole system.
So if you have high-mileage engine, cleaning the build up is required maintenance.
Dealers replace manifold with new one, what can get pretty expensive, but that is nice DIY job with no cost to the owner.
The main issue with the flap system is semi-hard build-up around them, what can
-break control rod
-burn the actuator
-freeze whole system.
So if you have high-mileage engine, cleaning the build up is required maintenance.
Dealers replace manifold with new one, what can get pretty expensive, but that is nice DIY job with no cost to the owner.
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
So now, after we gather basic information, we can analyze the codes.
P0244 MERCEDES-BENZ - Turbocharger/Supercharger Wastegate Solenoid 'A' Range/Performance
P2510 The Powertrain Control Module (PCM)/Engine Control Module (ECM) monitors the voltage to the ECM/PCM Power Relay. The ECM/PCM set the OBDII code set when the ECM/PCM Power Relay is out of factory specifications
The first code suggest bad turbo performance. It can be leak in the intercooler system, or bad turbo, so start with checking for leaks
The 2nd code indicate electric or electronic problem. Clean all the plugs going to engine computers with MAF or other cleaner and if that doesn't help, you might need better scanner to go farther.
P0244 MERCEDES-BENZ - Turbocharger/Supercharger Wastegate Solenoid 'A' Range/Performance
P2510 The Powertrain Control Module (PCM)/Engine Control Module (ECM) monitors the voltage to the ECM/PCM Power Relay. The ECM/PCM set the OBDII code set when the ECM/PCM Power Relay is out of factory specifications
The first code suggest bad turbo performance. It can be leak in the intercooler system, or bad turbo, so start with checking for leaks
The 2nd code indicate electric or electronic problem. Clean all the plugs going to engine computers with MAF or other cleaner and if that doesn't help, you might need better scanner to go farther.
Thread Starter
Junior Member
Joined: Mar 2016
Posts: 26
Likes: 0
From: Pietermaritzburg
W203 C320CDI Auto
So now, after we gather basic information, we can analyze the codes.
P0244 MERCEDES-BENZ - Turbocharger/Supercharger Wastegate Solenoid 'A' Range/Performance
P2510 The Powertrain Control Module (PCM)/Engine Control Module (ECM) monitors the voltage to the ECM/PCM Power Relay. The ECM/PCM set the OBDII code set when the ECM/PCM Power Relay is out of factory specifications
The first code suggest bad turbo performance. It can be leak in the intercooler system, or bad turbo, so start with checking for leaks
The 2nd code indicate electric or electronic problem. Clean all the plugs going to engine computers with MAF or other cleaner and if that doesn't help, you might need better scanner to go farther.
P0244 MERCEDES-BENZ - Turbocharger/Supercharger Wastegate Solenoid 'A' Range/Performance
P2510 The Powertrain Control Module (PCM)/Engine Control Module (ECM) monitors the voltage to the ECM/PCM Power Relay. The ECM/PCM set the OBDII code set when the ECM/PCM Power Relay is out of factory specifications
The first code suggest bad turbo performance. It can be leak in the intercooler system, or bad turbo, so start with checking for leaks
The 2nd code indicate electric or electronic problem. Clean all the plugs going to engine computers with MAF or other cleaner and if that doesn't help, you might need better scanner to go farther.
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Thread Starter
Junior Member
Joined: Mar 2016
Posts: 26
Likes: 0
From: Pietermaritzburg
W203 C320CDI Auto
OK, I test for leaks on intercooler and pipes -- No leaks.
Tested the wiring -- no problems
So I got this brain fart -- I took the arm of the turbo vaines of the actuator. Pulled the arm up to start the car and after start let it drop back. And guess what. The actuator stays down and no mil. I tried pulling the vaines arm up to feel the movement and boy was that a stepping movement. So it looks definitely like the "new" vaines is shot. 4 months old? What can be the cause of this? Heat that makes the vaines melt around the edges?
Tested the wiring -- no problems
So I got this brain fart -- I took the arm of the turbo vaines of the actuator. Pulled the arm up to start the car and after start let it drop back. And guess what. The actuator stays down and no mil. I tried pulling the vaines arm up to feel the movement and boy was that a stepping movement. So it looks definitely like the "new" vaines is shot. 4 months old? What can be the cause of this? Heat that makes the vaines melt around the edges?
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MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
I was rebuilding my turbo at 180k by pushing new bearing sleeve and some small parts and veins, although they had some soot to clean did not need rebuilding.
I think something went wrong with your rebuild.
I think something went wrong with your rebuild.
Thread Starter
Junior Member
Joined: Mar 2016
Posts: 26
Likes: 0
From: Pietermaritzburg
W203 C320CDI Auto
I googled myself blue in the face looking for help how to remove the exhaust manifold on the left-hand side of the car.
Does anybody have a manual or pics of how to remove the left side exhaust manifold? I'm driving a W203 with a om642 engine and the space around the engine is not enough to swing spanners around.
🥺
Thread Starter
Junior Member
Joined: Mar 2016
Posts: 26
Likes: 0
From: Pietermaritzburg
W203 C320CDI Auto
The other picture is showing the heat shield over the exhaust manifold that I need help with to get it removed, so I can get the manifold off the engine.
The Triangular flange at the end of the flexible exhaust manifold
Heat shield over exhaust manifold
Thread Starter
Junior Member
Joined: Mar 2016
Posts: 26
Likes: 0
From: Pietermaritzburg
W203 C320CDI Auto
Kajtek1, this breakdown is excellent. Thank you so much. I managed to remove the left side manifold. I will remove the right side tomorrow. Thank you Kajtek1, you are really a blessing.
Where can I source a pdf manual for the OM642 engine. I've tried downloading manuals for the W203 in om642 but no luck.
But Thank you again you were really helpful.👌
Where can I source a pdf manual for the OM642 engine. I've tried downloading manuals for the W203 in om642 but no luck.
But Thank you again you were really helpful.👌
Member
Joined: Mar 2019
Posts: 145
Likes: 14
Ml350 bluetec
Kajtek1, this breakdown is excellent. Thank you so much. I managed to remove the left side manifold. I will remove the right side tomorrow. Thank you Kajtek1, you are really a blessing.
Where can I source a pdf manual for the OM642 engine. I've tried downloading manuals for the W203 in om642 but no luck.
But Thank you again you were really helpful.👌
Where can I source a pdf manual for the OM642 engine. I've tried downloading manuals for the W203 in om642 but no luck.
But Thank you again you were really helpful.👌
