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Loss of power and cant connect to ecu

Posted By Philthee Sunday, April 14, 2019 3:41:05 AM
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Philthee
 Posted Sunday, April 14, 2019 3:41:05 AM
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OK, 2003 l200 4work. A bit of a knacker...
About a year ago, my big end decided to get up and f*** off. I left her out the back for a while and only just got round to sorting it out. Rebuilt the block, the head and turbo were only a year old so didn't worry about them. After the rebuild it fired up with no issues except the eml light, I found the Vgt solinoid was not working, but when fed power straight from the battery, the actuator arm moved nicely to the top adjuster screw. I had to start using it to get to my new job and was happy enough to plod around with no boost. I had tried to connect my torque pro app to it but said it couldn't talk to the ecu. A couple of nights ago driving home and all my power just went, engine running, no smoke, no missing, would rev but only to 2.5k and while driving about 1.5k on the flat. The AA bloke had no idea and went for his laptop and also couldn't connect...
I have checked the timing, air, compression, fuel lines and filter, vacuum hoses, and am at a loss, oh and yes it's got plenty of diesel.
Can someone please help, I'm loosing my mind!!!



Sunday, April 14, 2019 3:43:05 AM by Philthee
CYRIL (T)
 Posted Sunday, April 14, 2019 4:36:10 AM
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Best give details of what car we are dealing with as the post is very vague

Regards

Cyril

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Philthee
 Posted Monday, April 15, 2019 5:15:54 AM
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OK, 2003 l200 4work. A bit of a knacker...
About a year ago, my big end decided to get up and f*** off. I left her out the back for a while and only just got round to sorting it out. Rebuilt the block, the head and turbo were only a year old so didn't worry about them. After the rebuild it fired up with no issues except the eml light, I found the Vgt solinoid was not working, but when fed power straight from the battery, the actuator arm moved nicely to the top adjuster screw. I had to start using it to get to my new job and was happy enough to plod around with no boost. I had tried to connect my torque pro app to it but said it couldn't talk to the ecu. A couple of nights ago driving home and all my power just went, engine running, no smoke, no missing, would rev but only to 2.5k and while driving about 1.5k on the flat. The AA bloke had no idea and went for his laptop and also couldn't connect...
I have checked the timing, air, compression, fuel lines and filter, vacuum hoses, and am at a loss, oh and yes it's got plenty of diesel.
Can someone please help, I'm loosing my mind!!!
Philthee
 Posted Monday, April 15, 2019 5:17:42 AM
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I had typed that out in the initial post, not sure why it wasn't displayed...
miketribe
 Posted Wednesday, April 17, 2019 3:16:22 AM
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With respect, as it seems you do have a bit of knowledge, I would suggest that you are going to need a far better diagnostic tool than the one you have on your phone or tablet. A good slice of live data will also be useful and possibly a scope.

I reckon a good session with a tech who possesses the right tools and knowledge will see this sorted

cheaper than you might imagine.



but when fed power straight from the battery, the actuator arm moved nicely to the top adjuster screw.




Did you leave it like that? I hope not.




Mike


Being in business would be fine, if we didn't need customers.
Philthee
 Posted Wednesday, April 17, 2019 4:39:13 PM
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Replaced the interior light fuse, suddenly managed to communicate with the ecu...I know my diagnostic equipment is crap, but it gives fault codes... I'm a old school diesel mechanic, the electronic side of things is witch craft!
So, I've got fault code 46 injector valve adjustment, 52 vgt solinoid, 49 over boost and the really wierd one that I've never heard of 13 barometer pressure sensor?!
Where do I start looking? I know the vgt is ok, but what ever is telling it to move isn't.
And, no don't worry Mike, I can't afford a new turbo, had just been running with out boost!
sparki1
 Posted Wednesday, April 17, 2019 5:05:02 PM
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Pressure sensor is inside the Ecu on those mems units, is pipe connected both ends?
Philthee
 Posted Thursday, April 18, 2019 8:45:50 AM
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Yeah all the pipes are connected as they should. I took the ecu out last night, it was pretty shitty inside, looked like water damage, I cleaned it with contact cleaner and the girlfriends toothbrush and plugged it back in. A mate has just plugged his delphi into it, still getting same codes and unable to clear them. Is the ecu trash? I know her toothbrush is...

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