Need help figuring out why my 1992 60 Series won't run.

[Busted Knuckle]

OK so the bus I traded for and kept to convert for myself when we closed KY Lakeside Travel is a 1992 Neoplan with the 12.7 DD 60 Series.
It's been sitting a while and I have been trying to get it fired up and moved so I can finally start my project.

But when I first went to try it it would barely turn over and no start. And it would like stutter (for lack of a better description) while trying to turn over.  OK so at first I was trying to start it with 2 group 31's with a pair of jumper cables on both from 2 seperate pick trucks.
Well after that failed I bit the bullet and went and bought 2 new 8D's still no luck even with a pick up jumping one battery, and a battery charger on 200 AMP BOOST on the other.
Still no start and it seemed like the "stuttering" got worse while we were trying it with spraying either in it, but still no start.
I took a fitting out of the first fuel filter (before the pump) and hooked up an electric fuel pump, still no luck!

OK I again I bit the bullet an bought a 39MT starter for it. I put the 39MT on it and tried it again. First time it pushed the rear start switch NOTHING, so I checked all the wires and everything was like it was supposed to be.
Tried the front start button, still NOTHING!
So I got in there and used a jumper from the hot post on the starter (after checking voltage) to the small post on the solenoid and it spun over like mad. While I was cramped up down by the starter I had my helper hit the rear start button, NOW it spins over like it should but starts the stuttering again.
OK so that tells me the rear start switch needs replaced.
But now I have it turning over nice an fast it still doesn't wanna run.
I will hit and run as long as I'm spraying either, but let off the either an it dies.

So I am pretty sure it's not getting a signal from the DDEC to fire the injectors.
I have checked and checked for fuses in or near the batteries for the DDEC, but I can't find NONE!
I have looked and looked everywhere for DDEC fuses and can't find them.
I opened up the junction panels and checked ALL the breakers and nothing is tripped.
I am at a loss.

BTW while I was at it I went and had a 2/00 ground cable made to go from the main ground post next to the battery and ran it to the starter ground post. (the old one just went to the chassis, next to the battery with a ground coming off a ground post on the chassis about 4 feet from the main one) So now I have GOOD ground with only about 36" cable straight from the main post and not 30" coming off a secondary post. (btw I did hook the old one up also)
I also had a new cable made from the negative post to the main ground post, and one from the positive post to the shut off switch. (I also temporarily bypassed the 12V and the 24V shut off switches by putting all 12V wires from that switch to one post and all the 24V cables on one post)  Yes I know I need to reconnect those shut off switches once I have it running, just trying to eliminate problems for now.
;D  BK  ;D

[richard5933]

Check the ground connection on the DDEC control box. No ground - no signal.

[chessie4905]

Sounds like you need to go over the ground connections for the ddec. clean and reconnect all of them. Sitting that long creates all sorts of ground connection problems.

[DoubleEagle]

Loss of fuel prime is a possibility, but a bad ground connection is most likely. It should fire fairly quickly.

[Van]

Bryce have you checked voltage at the Vanner?

[luvrbus]

If the check engine light doesn't come on and go off in a few seconds it won't start,the check engine light tells you if the ECM has power 

[thomasinnv]

You's gots to find dem fuses. Trying to start with low batteries CAN blow the ddec fuses, been der done dat. Ddec 2 or 3? I'm sure Cliff can tell you right off the top of his head which pins to check for voltage and ground on the ecm. Btw, series 60 do NOT like to run on ether, you can dump a whole can in there and barely get a chug.

[blue_goose]

What Cliff said, if they don't come on and go off you are wasting your time doing anything else until that happens.
Jack

[Van]

Bryce, Just throwing it out there but check and make sure your wires didn't get nibbled by the critters.

[buswarrior]

Cut open the heat shrink on the batt cable connectors.

Creeping green and black plague?

Had that trouble on 6 year old Prevost...

Happy coaching!
Buswarrior

[someguy]

Pull codes from the ECM. 

It won't fire the injectors if it doesn't have a steady signal from the crankshaft position sensor.  You'll also see a low voltage error if you do have a ground problem.

[Van]

What Cliff said, if they don't come on and go off you are wasting your time doing anything else until that happens.
Jack

If the check engine light doesn't come on and go off in a few seconds it won't start,the check engine light tells you if the ECM has power 

Yup! Until then, that pretty much sums it up. Good luck!

[6805eagleguy]

First start on mine after transplanting it into the Eagle was the same symptoms, but I just didn't quite have prime, one shot of ether was all it took

Fuel was at the pump but we had an extremely hard time getting it to the injectors

HTH

[someguy]

You can't rely on the CEL when you turn the key on to tell you if the ECM has sufficient power because the power requirement increases when firing the injectors and the starter pulls down the system voltage when cranking the engine. The ECM has a specific low voltage error, which might be occuring during cranking. 

It also has errors for open injector connections.

So by pulling codes you will immediately see:

- whether or not there is a power issue to the ECM
- whether or not the crankshaft position sensor is working
- whether or not the injectors and harness are good.

I believe the S60 ECM also monitors fuel pressure.  I'd have to check.

Whenever you have an issue with an electronic diesel engine, the first step is to pull codes.  It will save you many hours of troubleshooting time.

[luvrbus]

Code 48 is low pressure fuel but doesn't keep one from starting and running and you can change the programed limit,2 new 8-D batteries and the MT 39 reduction starter voltage drop is not his problem since the 12.7 was machinal injection the DDEC just measured the amount of fuel