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Old 06-14-2019, 04:44 PM   #21
lindenengineering
 
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Default Re: Stuck in limp mode

Wrench 36
We have Shop Key for everything incl Petes, and if you shoot me the year and month I can pull off the actual wiring diagram for this rig if you need it.
Just need need an mail or fax number.
PM me with it if you need it.
Dennis
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Old 06-14-2019, 04:52 PM   #22
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Default Re: Stuck in limp mode

Sprinter is just a curious hobby for me and yes, DIYers contribute immensely to the forum, many knowing more than so-called "Professionals."Some Sprinter Gurus would like people to think Sprinter stuff can't be learned, except by geniuses, Rhodes Scholars or MIT grads.

If I was just starting a new shop, I would limit my services to repairs and maintenance that can be accomplished in one day. For example, among others, brakes, oil changes and trans maintenance. In-N-Out in one day to start cash flow stream. No sense getting bogged down trying to diagnose stupid GERMANS cars. Use this diagram as an example to customers about the system's complexity.

If you are going to work on Mercedes, I also suggest looking into Star Xentry scanner with mandatory 3,000 annual subscription. The $40,000 plus investment will be worth it. You may may "Get by" using other scanners but not as easy. Especially when it come to re-setting the start countdown or tech support.

BTW, thank you for sharing your findings.
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Last edited by Bobnoxious; 06-14-2019 at 04:56 PM.
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Old 06-14-2019, 06:16 PM   #23
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Default Re: Stuck in limp mode

Thanks guys I appreciate your patience and understanding. I now have access to Mitchell's and I am pretty sure the ecm has failed. I found it loose in its cradle and banging around. You don't need to be a genius to know that sensitive electronic components shouldn't be bouncing around the engine compartment. I am in the process of checking ecm itself.
Lol I wish I had the luxury to pick my jobs but these trucks are my partners and this particular truck is an emergency mobile service truck for servicing fiber optic cables and must be fixed now. I just wasn't expecting to get into complex electronic diagnostics this soon so I was dragging my feet on the scan tool and shop system front. I figured like you said do some basic maintenance and repairs to get up and going but everyone is bringing their stuff to me now. Have a Volvo, Mack and 2 freightliners coming in next week so far along with these little trucks.
I have been a mechanic for 35yrs but I have always worked for big companies but I was given opportunity to start my own business so I grabbed the brass ring and away we go. Down side is I have to work on medium duty diesels. I get to tear into a power stroke next. Can't wait.
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Old 06-14-2019, 07:54 PM   #24
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Default Re: Stuck in limp mode

For a replacement consider SOS diagnostics who will do the exchange & all the programming for you, so its plug n play for you.

As for years !
I have been at this for 62 years.
Starting at 9 years of age in my dad's shop and his father's before him. AND a horse oslers stables in HIS grandfather's time! A family affair fixing and making stuff.
My first job --Adjusted the rod brakes on a 1935 Hillman.
Then mastered spill injection pump timing on a Gardner 6LW by the time I was 10.
All the best with the new venture
Dennis
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Old 06-15-2019, 06:40 PM   #25
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Default Re: Stuck in limp mode

Update???
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Old 06-17-2019, 06:48 PM   #26
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Default Re: Stuck in limp mode

Still in same boat. I suspect I have a wiring issue. Still unable to read anything on exh. Temp. Sensors upstream of DPF and upstream of turbo. Both are reading 32F
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Old 06-17-2019, 07:10 PM   #27
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Default Re: Stuck in limp mode

Quote:
Originally Posted by Wrench36 View Post
Still in same boat. I suspect I have a wiring issue. Still unable to read anything on exh. Temp. Sensors upstream of DPF and upstream of turbo. Both are reading 32F
Again, based on the vehicles age of eight years, notoriously mediocre European wiring, and unaware of its maintenance history, I would start checking grounds, especially in the engine compartment where they're exposed to the elements, and there are a boatloads of them, SIX feeding the ECU. After grounds, proceed to connectors.

How old is the battery??? The battery's location makes it prone to suffer lack of preventative maintenance.

https://www.mbwholesaleparts.com/con...st-Battery.pdf

https://www.mbwholesaleparts.com/con...Come-First.pdf
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Last edited by Bobnoxious; 06-17-2019 at 07:36 PM.
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Old 06-17-2019, 07:22 PM   #28
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Default Re: Stuck in limp mode

More grounds
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Last edited by Bobnoxious; 06-17-2019 at 07:33 PM.
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Old 06-17-2019, 07:23 PM   #29
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Default Re: Stuck in limp mode

Whatever you do, when it comes to sensors, buy only genuine Mercedes-Benz.
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Old 06-17-2019, 07:28 PM   #30
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Default Re: Stuck in limp mode

Better view of Left grounds.
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Last edited by Bobnoxious; 06-17-2019 at 07:32 PM.
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