Author Topic: Didn't expect that (Read 9997 times)

chazwood · « **on:** January 03, 2013, 06:11:53 PM »

Was in the electric panel under the driver window with the bus running and touched a wire to the REI radio system amp to supply a voltage to see if it still worked and spark-poof-silence! The bus shut off and now the whole thing is dead as a door nail. I had no idea a single small spark could wipe out the whole bus!
Don't even know where to start.

Chaz
92 MCI 102c3

chazwood · « **Reply #1 on:** January 03, 2013, 06:24:16 PM »

Having recovered from the initial shock and probed a bit further it seems everything works that would work without the ignition switch being on but everything that relies on the ignition is dead. Ideas?

robertglines1 · « **Reply #2 on:** January 03, 2013, 06:37:16 PM »

Ill guess: inline fuse to DDEC off battery look for inline fuse holder in front elect compartment or battery compartment. Maybe BK will chime in I think he had problem some years ago. Bob

lostagain · « **Reply #3 on:** January 03, 2013, 06:42:18 PM »

You got to get out your manual and look for fuses.

JC

chazwood · « **Reply #4 on:** January 03, 2013, 06:57:09 PM »

Dang, don't have a manual

robertglines1 · « **Reply #5 on:** January 03, 2013, 07:06:27 PM »

You should have 12 volt feed going from switch back to ddec. on my 89 prevost there was a inline fuse in the front elect compartment after the ign switch. Some have a 12 volt selonoid (sp) activated by ign switch. Get your volt meter out. Some had a inline fuse rite at battery tap (12 volt) all possibilities. I don't have a manual for your coach. Hopefully a MCI guy will chime in. My last MCI was mechanical. Bob

Boomer · « **Reply #6 on:** January 03, 2013, 09:17:15 PM »

Try asking your questions on the MCI forum, MCI Bus Talk.com
Someone there will have the answer.

chazwood · « **Reply #7 on:** January 04, 2013, 06:17:11 AM »

What is a ddec? This engine is a cummins l10.
Thanks for your help.

expressbus · « **Reply #8 on:** January 04, 2013, 06:57:02 AM »

DDEC = Detroit Diesel Engine/Electronic Control. Perhaps you should add your engine type to you signature information. Then we will all know you do not have DDEC.

Just saying ...

robertglines1 · « **Reply #9 on:** January 04, 2013, 08:38:22 AM »

Same general idea if it has a electric fuel shut off. Was assumed that most Mci had detroit and that year DDEC. Good luck! Bob

chazwood · « **Reply #10 on:** January 04, 2013, 02:35:19 PM »

Update! The Po connected the radio cutoff switch to the master control breaker. We fried the breaker when we shorted the radio controller. Moved the master control wiring to an empty breaker and she started right up.

robertglines1 · « **Reply #11 on:** January 04, 2013, 05:05:11 PM »

Good outcome! Glad you worked it out. Bob

chazwood · « **Reply #12 on:** January 05, 2013, 07:59:48 AM »

Thanks ! The kids were running around the house with the touchdown sign when it started.

Ok, maybe I was too.

Mex-Busnut · « **Reply #13 on:** January 05, 2013, 08:50:11 AM »

Chazwood:

Glad to hear you got it up and running! What part of the galaxy is home base?

How do you like that Cummins L-10? How does it do on fuel economy? A lot of the older buses here in Mexico that came with 8V71 or 6V92TA Detroits were upgraded with the Cummins L-10.

Seangie · « **Reply #14 on:** January 05, 2013, 09:18:11 AM »

Quote from: chazwood on January 05, 2013, 07:59:48 AM

Thanks ! The kids were running around the house with the touchdown sign when it started.

Awesomeness

BCM Community

Author Topic: Didn't expect that (Read 9997 times)

chazwood

Didn't expect that

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