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Old 08-23-2019, 06:15 PM   #1
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Join Date: May 2019
Location: Vermont
Posts: 8
Year: 2000
Coachwork: BlueBird
Engine: B5.9L CUMMINS
Exclamation HELP with strange issue no one seems to be able to solve!!!

Hello,

I am hoping you can help me diagnose the problem as no one else I have encountered has been able to.

the bus:
2000 bluebird tc-1000 26ft
cummins diesel B5.9L
Allison At-545

the problem:
as I turn the key, the engine starts up and turns over
as I let go of the key it dies immediately
if I start it up and the engine turns over and I HOLD THE KEY IN PLACE the engine stays running but as soon as I let go it dies immediately
sometimes the engine has trouble starting up and cranking but eventually does

potential remedies:
starter solenoid?? -seems unlikely
fuel sending unit/pump??-fuel gauge is erratic but would it cause this issue?

prior to changing the battery and snipping the wires leading to the rear a/c and rear heater everything was just fine as far as I know. I had just purchased the bus to convert into a home.

I am pretty handy and have been doing my own automotive work on my jeep and would be so thankful for any help you may be able to offer.

Conversation is coming along swimmingly! finishing up electrical and plumbing but need to make sure the bus can start and RUN!

Best,
Jaimie
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Old 08-23-2019, 06:26 PM   #2
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Join Date: Feb 2015
Location: Cincinnati, Ohio
Posts: 853
Year: 2000
Coachwork: Blue Bird
Chassis: International
Engine: TE 444
Rated Cap: 12
Bad key switch
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Old 08-23-2019, 07:02 PM   #3
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Join Date: Jul 2016
Location: Western Oregon
Posts: 453
Year: 1995
Coachwork: Blue-Bird
Chassis: TC RE 3408
Engine: 5.9 Cummins 12V Mechanical
Rated Cap: Blue-Bird says 72 pass.
That's the first place to look. You'll be lucky if it's that simple, but if it's not make a list and go through it.
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Old 08-23-2019, 07:17 PM   #4
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Join Date: May 2019
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Year: 2000
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Engine: B5.9L CUMMINS
perhaps somebody can post "a list" ^^
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Old 08-23-2019, 07:39 PM   #5
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Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 7,551
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
1 Buy new switch
2 Change switch
3 Start bus

The switch takes all power away from most everything but the starter when you turn the key to start. When you release it, it cuts the power to the starter and reconnects everything else. Sounds like faulty switch to me.
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Old 08-23-2019, 08:11 PM   #6
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Join Date: May 2019
Location: Vermont
Posts: 8
Year: 2000
Coachwork: BlueBird
Engine: B5.9L CUMMINS
very cheeky o1marc, there are multiple components to a starter.

I don't just run out and buy the first thing that comes to mind.

list currently is:

check battery connections
check loose ignition SWITCH connections
perhaps not igniter switch but the igniter or ignition module
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Old 08-23-2019, 08:17 PM   #7
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Join Date: Jul 2017
Location: Huntington beach
Posts: 700
Year: 1991
Coachwork: Bluebird
Chassis: T/C 2000 28 foot Handy Bus
Engine: Cummins 5.9 Mechanical
Rated Cap: 2
Quote:
Originally Posted by Kubla View Post
Bad key switch
That is what I suspected also. Jump the switch out , check the connections physically, and tug and test on relays associated.
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Old 08-24-2019, 10:18 AM   #8
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Join Date: Jan 2016
Location: Foot of the siskiyou mountains Oregon.
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Year: 1989
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Rated Cap: 42
I have had this problem on a Cummins powered RV. After hours of tracing and trying different things, it turned out to be the key switch.
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Old 08-24-2019, 11:32 AM   #9
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Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 7,551
Year: 1999
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Engine: DT466/3060
Rated Cap: 77
If every reply is the key switch, certainly don't believe them. So I wonder why the question was asked?
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Old 08-24-2019, 11:44 AM   #10
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Join Date: Nov 2010
Location: Andrews,Indiana
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Year: 1991
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Chassis: AARE
Engine: 3116 Cat 250hp
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The ignition switch is quite easy to check. OP said all was fine until some electrical work was done, quite possibly a place to start after checking the switch.
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