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Old 11-19-2005, 05:34 PM   #1
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Turns over but doesn't stay on - is it a safety thing?

I have a '91 Ford Handy Bus. Sometimes I'll go to start up the bus, and it turns over, but doesn't stay on. I'm not sure if maybe it's something connected with the air brakes or some sort of safety. Doesn't matter what gear I put it in, it won't stay on - even if I try to put the brake on "release". But, sometimes it turns right over and drives great. I make sure the back door is closed, the handycap door, and side door. It sounds like it wants to go, but something just makes it power right down. I'm thinking it's something electrical. Anybody else have this problem? She sounds and runs great when I'm finally able to get her turned over and on.
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Old 11-19-2005, 05:39 PM   #2
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how about more details?

what engine ?

does the motor stall, or just idle?

does it act up before you try to put it in gear?
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Old 11-20-2005, 12:49 AM   #3
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Need more info, is it diesel or gas? Have you cheked air and fuel filters?
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Old 11-20-2005, 09:16 AM   #4
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how about more details? Sure thing.

-->air and fuel filters <I think - God, I hope with the $$ I've spent> both have been changed,

what engine ? It's a Ford B600, Diesel,

does the motor stall, or just idle? it stalls; it starts but cuts out.

does it act up before you try to put it in gear? yes - neutral with brake switch flipped up (engaged)...then I try releasing the brake...still no avail. It seems to not work at all if I try to put it in anyother gear.
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Old 11-20-2005, 09:48 AM   #5
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Quote:
Originally Posted by lseagro1
what engine ? It's a Ford B600, Diesel,
that doesn't really say what diesel engine is in your bus. Ford B600 is the chassis.

is it an inline 6 cylinder motor that is grey in color? This would the brazilian/new holland seriers. either a 6.6 liter or a 7.8.

or

is it a V-8 motor? In this case, it's almost certianly a 7.3 liter powerstroke (or an earlier predecestor)...did they have a 6.9? first? I'm not too familiarwith these engines.

There might be more engine options available too......
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Old 11-20-2005, 11:39 AM   #6
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I've never even heard of a 7.3 IH in a B600...it was pickup-only for Fords. A B600 could also have:
5.9 B-series Cummins (I-6).
8.2 Detroit (V
3208 Cat (V8, very unlikely)
8.3 Cummins (I-6, very, VERY unliklely)
6V53 or 6V71 Detroit (V6, very, very unlikely...but would be pretty cool)
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Old 11-21-2005, 12:22 AM   #7
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How well does it idle? Since it is a diesel it is pretty simple. They take air and fuel. Can you rev up the engine while it is in neutral? It might be a fuel problem like air in the line or the pickup is clogged in the tank. Any unusual smoke while it is running?
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Old 11-21-2005, 06:47 PM   #8
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Some buses with lift doors have switches wired up that will cut the power to the injector pump when the lift door is open and you try to put it in gear. I doubt yours has this set up, but its a thought.
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Old 11-29-2005, 01:48 PM   #9
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Excellent info so far! thank you guys!

I wish it was a Cummins! I'm not sure what it is. I'll check under the hood and let you know for sure.

As for idling, it won't get to idling due to this issue I'm having.

When I go to gas it as I'm turning it on, it doesn't "take".
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Old 11-29-2005, 01:51 PM   #10
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oh, and no smoking issue at all. It does suspiciously seem like an air/fuel issue...but 2 folks have worked on it and said they changed those out/checked them. Hmmmm. wonder what they did or didn't do? I really would love to get a manual of my bus to look at it myself. Where can I get one of those?
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