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Old 01-12-2010, 06:58 PM   #1
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Engine brake problem

My parents have a problem with their 2008 Monaco Scepter. The engine brake does not work. The switch does not light up, relays and fuses seem to be ok. Just to make it a little complicated, they have an after market steer center device installed and it also is not working. The steering device wiring was somehow spliced into the same circuit as the engine brake. Any ideas?

2008 HR 340 Cummins, Vacationer XL
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Old 01-13-2010, 09:01 AM   #2
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Location: Oakton, Va
Posts: 1,135
I had a wiring problem from the factory on my exhaust brake and it took two shops and six weeks to fix it. About 100 shop hours were expended, fortunately for me under warranty. You can look for a loose wire or a fuse problem, but beyond that troubleshooting is very difficult. I would ask if the exhaust brake worked before the steering center mod? A clue like that would narrow down the search considerably. I would look real hard for a blown fuse or loose wire before turning it over to a shop. If you do use a shop you should get the very best you can possibly find because I watched a good one fumble for six weeks. I know just enough to realize that they were doing a good job. I now know that Freightliner in Gaffney could have done the job much quicker and I would have been way ahead making the 600 mile drive.

Jim Walker
N Virginia
2014 Palazzo 33.2
Cummins 6.7 ISB, Allison 2100 6 Speed
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Old 01-13-2010, 09:36 AM   #3
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We found the fuse this morning by checking them one at a time with a test light. Was a 10 amp fuse, now engine brake and steer center are working.

thanks for the reply

2008 HR 340 Cummins, Vacationer XL
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