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2006 DD Series 60 ECM Altitude Programming
Good Morning,
My Prevost final build sheet record reflects my bus is dated February 2006 and I’m curious if anyone can speculate the likelihood of whether its ECM during this era would have been programmed to shut down the EGR when its barometric sensor (which I can clearly see and easily access) tells the ECM that it is at high altitude. (Interested in the Ugly Fix)
2nd Part of Question:
IF I need to ask a DD shop to program the ECM to recognize the barometric sensor, is it a simple process for a technician? Is it as simple as the technician “selecting yes or no” in a box (i.e., very unlikely anything else could be effected?)
I have never had to take a coach of mine in to have the ECM checked…any suggestions or experiences appreciated – especially if anyone has someone special to recommend 🙂
(please send a private message if do not want to post publicly)
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1 Reply
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This response is important for all to know.
The dealers for Detroit and I presume Volvo are obligated by law to make certain the programming on engines is in compliance with the EPA certification standards.
In other words the engine has to have the ECM programmed as it was originally (subject to factory required reprogramming) and this means if it was modified to produce more HP or had any other changes the dealer has to restore the programming to the default settings. At a recent seminar the local Detroit dealer told of some situations in which an engine had a program designed for a different vehicle and according to the dealer he had to return to the original default settings or not release the engine (coach) back to the owner.
If the dealer failed to do so it was subject to significant fines.
Having said that in regards to this specific issue I know of some coaches that came from the factory with the EGR disabled above 11,000 feet, while others the factory settings did not provide for the EGR to be disabled at any altitude.
Given the question I would speak to my local Detroit dealer and ask if that change to an 11,000 foot EGR limit is an allowable change. If it is then have it made and then do whatever might make the coach more acceptable to you the owner, but keeping in mind the EGR is a mandated feature to be compliant with EPA certification requirements for the engine.
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