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Old 02-06-2019, 04:08 PM   #1
Mini-Skoolie
 
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Dt466e no start

Hey guys, I have a 2004 dt466e and just swapped from the green coolant to the red. I filled system with more fluid than I recovered (it was a little low) for a total of 8 gallons after I squeezed hoses and bled the pipe to the thermostat twice. I do not seem to have any air in the system and have valve to heaters closed and planned on topping off after opening. It cranks strong but no signs of firing. The coolant level module has been unplugged since I purchased the bus in April. I've had zero issues with starting and see nothing that I could have accidentally bumped while draining/filling fluid. Looking for any and all help! Bus is currently half way out of my shop so I cant even close my doors. Thanks!
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Old 02-06-2019, 06:05 PM   #2
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Are you getting good fuel pressure at the schrader valve on the fuel filter housing?
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Old 02-06-2019, 06:30 PM   #3
Mini-Skoolie
 
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Reinsch, I am getting good pressure and the bowl is full. The bus ran just fine just prior to changing the coolant, as I drove it in the shop. Does the coolant run fuel system or anything like that? May be silly but I'm just at my wits end here. Thanks for chiming in I appreciate any ideas!
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Old 02-06-2019, 07:19 PM   #4
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Can you check for any codes stored in the ECM? There should be a diagnostic button under your dash that you can press. The light on your dash will flash a number of times. Codes are generally 3 digits long, so it will flash a number of times for the first digit, pause slightly, and begin to flash a number of times for the second digit, and so on and so on.

The other thing to check is to make sure you're getting good, clean power supplied to your ECM. Clean battery connections, check fuses, etc.

On the 466E if you're getting it to crank over and you have adequate fuel pressure the only other thing to check is how much oil pressure is being supplied to the injectors which isn't exactly easy to check.
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Old 02-06-2019, 07:25 PM   #5
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Thanks, will check those asap!
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Old 02-06-2019, 07:25 PM   #6
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Any emergency doors or windows open?
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Old 02-06-2019, 07:32 PM   #7
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No, and my bus will start with them open but I have seen some that wont. Good thought, thanks
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Old 02-06-2019, 07:53 PM   #8
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The coolant level sensor is a definite safety built into the starting circuit.

You say yours was disconnected for some reason. It must have been stuck in a normally closed position for the bus to start up until now. Someone has likely bypassed the sensor to fool the 'puter in days gone by allowing it to start.

So, something gave and the sensor opened up which may affect other parts of the start circuit causing a no start, whether it is connected or not.

Not sure how you can bleed the system of air without starting the engine to force air out. Can you explain that procedure ?
I would tend to think you still have air to get out before expecting it to light up.


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Old 02-06-2019, 08:00 PM   #9
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Quote:
Originally Posted by Entech.medic View Post
Hey guys, I have a 2004 dt466e and just swapped from the green coolant to the red. I filled system with more fluid than I recovered (it was a little low) for a total of 8 gallons after I squeezed hoses and bled the pipe to the thermostat twice. I do not seem to have any air in the system and have valve to heaters closed and planned on topping off after opening. It cranks strong but no signs of firing. The coolant level module has been unplugged since I purchased the bus in April. I've had zero issues with starting and see nothing that I could have accidentally bumped while draining/filling fluid. Looking for any and all help! Bus is currently half way out of my shop so I cant even close my doors. Thanks!
IDk why your bus isn't starting but have you thoroughly researched DT coolants?
The red stuff is what's supposed to be in there but many folks switched to something else because lots of owners had timing cover leaks and/or liner seals fail and it had something to do with the coolant.
Not trying to scare you, its just that I had a 2004 IC CE300 with a leaky timing cover. The coolant ate through the timing cover at the outlet to the block.
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Old 02-06-2019, 08:07 PM   #10
Mini-Skoolie
 
Join Date: Feb 2019
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Yes, it has been disconnected since I purchased it. It was unplugged from the sensor at the reserve tank. I squeezed all hoses repeatedly while topping off and i used the bleeder screw on the top of the tube e that goes to the thermostat. Similar to what you would do in a car/truck. I have researched coolants and although there are many many different opinions out there it seems the red heavy duty with sca is the general consensus. But I may be wrong?
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