Threaded Mode | Linear Mode

10-19-2008, 15:22

This is test.Checking to see how long it takes for a reply.

2008/10/19 Leroy Eckert <"jwasnewski@yahoo.com">

Your line of thinking is parallel to mine except the prints for my coolant level sensor show the switch open. If the drawing is for normal conditions including full water in the puke tank then presumably the sender closes forming a circuit in abnormal conditions ie. low coolant.????Then the module sends a prompt to the DDEC II to go to ramp mode and cut off impulses to 4 of the EUI's. Presumably, it also disables the cruise enable also. It seems if the switch is normally open, if circuit wires were shorted or the module was shorted internally the indication prior to start would be "do not start" and a stop engine light, but I do not have enough schematics or books on the DDEC II to figure it out. What do you think?

I want to completely understand this system if possible. Maybe someone else understands the thing. I have gotten this far by studying my master coach prints, the generic systems in the DD manual, an overall generic DDEC II schematic and talking to Glen Rogers at BB. He was on the line when my coach was built.

The coolant module is in the lower load center in the front of the coach. It has 5 wires and is a DDEC system. Ignition hot, ground all the way to the batteries, (this ground is tied into the ATEC trans system and the cruise enable also), data wire to the ECM and two wires to the sensor.
Leroy Eckert
1990 WB-40 Smoke N Mirrors
Dahlonega, GA
Royale Conversion

--- On Sun, 10/19/08, Gregory OConnor <"Gregoryoc@aol.com"> wrote:

From: Gregory OConnor <"Gregoryoc@aol.com">
Subject: [WanderlodgeForum] Re: Going to get coach
To: "WanderlodgeForum@yahoogroups.com"

Date: Sunday, October 19, 2008, 9:10 PM

included in the coolant level warning there is a sensor/sender with two wires, on puke tank a seperate module unit with five wires, some place?' and wires' .

If the sender makes contactto complete a ground to prove proper coolant level, a short in the sender or module or wires could cause a false OK to operate signal.

If the sender loosing contact and not delivering continious ground is the signal that puts the bus in ramp mode ( 4 cylinder power) then the ground to the module could be disconnected.

if you remember back toa 94pt postabout loosing one of two DDec computer 12v+powerlinks from the battery to the Ddec and the post claimed that it was the power to 1/2 the cylinders. Ikinda think half the power is a wierd way to wire 1/2 a computer and always wondered why his bus would run on 4 cyls. since ramp mode is 4 cylinders, may have been the ground in the battery area (where the coolant module gets its ground) that when cleaned up( in the blind search for a fix), finaly kept the bus out of ramp????????

Greg94ptCa

--- In WanderlodgeForum@ yahoogroups. com, Leroy Eckert wrote:
>
> Based on my personal research and discussions with BB after this event occurred, the coolant level sensor (installed in the highest point of the radiator coolant) should have sent the engine with a DDEC II into Ramp Mode as all 8v92's with DDEC II were sent out from BB with this pre programmed. High coolant temp may not have worked if the water abruptly dumped into the crankcase but one should also expect high tranny temps in this case also. The sensors on my coach which can only safely be checked by hooking up a tester on the DDL are, coolant level, low oil pressure, high water temperature, and low fuel pressure.I have an optional coolant level module also. According to BB all should give an alarm if working properly and initiate Ramp Mode within 15 seconds of an event occurring outside the pre programmed parameters in the DDEC II. The buzzing when the key is turned on checks the circuits integrity, not the integrety of the sensors themselves. I gotta

> get my coach to a shop and get it checked out. I know my coolant level is working because I removed fluid from the tank and checked it.
> BB emphatically advised me not to go crossing wires on the various sensors as it could severely damage the DDEC II system.

> I hope you have great luck from here on out.
> Leroy Eckert
> 1990 WB-40 Smoke N Mirrors
> Dahlonega, GA
> Royale Conversion
>
> --- On Sun, 10/19/08, Don Bradner bluethunder@ ... wrote:

> From: Don Bradner bluethunder@ ...
> Subject: Re: [WanderlodgeForum] Re: Going to get coach
> To: WanderlodgeForum@ yahoogroups. com
> Date: Sunday, October 19, 2008, 4:16 PM
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> Correct - the DDECII does not output engine oil temp, or it would be simple to rig an alarm with VMSPC when it reached some temp.
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> I do have an analog oil temp gauge, but it runs pretty high all of the time - I'm not sure I would notice unless it *really* went high!
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> On 10/19/2008 at 7:30 PM ronmarabito2002 wrote:

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> >Only thing I can think of is for the safety sensors to shut it down
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> >first. Since the coolant temp did not rise, that sensor didn't do
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> >anything. It needs an oil temp sensor, but this model didn't have

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> >one. I'm planning to get a hold of Detroit to find out if one can be
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> >added. But I think it has to do with the DDEC II
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> >R.E. (Ron) Marabito, Dallas, TX 92WB40

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> > --- In WanderlodgeForum@ yahoogroups. com, "Dan Williams" danusa@
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> >wrote:
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> >> Ron, Is there anything that can be done to the engine to keep this from

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> >> happening again?
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> >> Dan, 8v92, Jackson, ms
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> >> _____
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> >> From: WanderlodgeForum@ yahoogroups. com
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> >> [mailto:"Wanderlodge" Forum@ yahoogroups. com] On Behalf Of ronmarabito2002
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> >> Sent: Sunday, October 19, 2008 11:00 AM
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> >> To: WanderlodgeForum@ yahoogroups. com
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> >> Subject: [WanderlodgeForum] Going to get coach

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> >> Hi to all of you. I paid the bill in Calgary yesterday via direct
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> >> wire transfer. The good news is: the exchange rate saved me about

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> >> $4,000 dollars, so all is not bad.
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> >> I will fly to Calgary in the morning to pick up the coach. I will
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> >> have to button up the bedroom, since they wanted to charge me over

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> >> $600 labor to do that. I won't leave Calgary until Tuesday morning.
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> >> Plan to stop see a friend in Lewistown, MT hopefully the first night
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> >> out. Depends on how I have to run with the re-built engine. I will

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> >> take a route back home avoiding as much mountain driving as possible.
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> >>
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> >> Once back in the US and further south, I should be able to get back
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> >> on line using my dish and I can give a report on how the engine is
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> >> performing.
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> >> Dick: Sorry to hear about you tranny problems. Hope they are minor.

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> >> R.E. (Ron) Marabito, Dallas, TX 92WB40
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