Bus Conversions dot Com Bulletin Board
December 20, 2014, 05:38:34 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: If you had an Online Subscription: By clicking on any ad, a hotlink takes you directly to the advertiserís website.
   Home   Help Forum Rules Search Calendar Login Register BCM Home Page Contact BCM  
Pages: [1] 2  All   Go Down
  Print  
Author Topic: Cadillac Automatic Override  (Read 2245 times)
Seangie
www.herdofturtles.org
Hero Member
*****
Offline Offline

Posts: 921


And We're Off... Like a Herd of Turtles


WWW

Ignore
« on: February 20, 2013, 05:19:47 PM »

Any one have any experience with one of these?

It seems to be the device that is giving me grief with the engine starts.  Looking specifically for a wiring diagram for it or an alternate solution.  It is the device connected to the skinner valves and I think is controlling the throttle stop and high idle.

Thanks All.

-Sean
www.herdofturtles.org
1984 Eagle Model 10S
Logged

'Cause you know we,
we live in a van (Eagle 10 Suburban)
Driving through the night
To that old promised land'
Seangie
www.herdofturtles.org
Hero Member
*****
Offline Offline

Posts: 921


And We're Off... Like a Herd of Turtles


WWW

Ignore
« Reply #1 on: February 21, 2013, 04:44:24 AM »

Just found this PDF here of a similar system -
http://www.alliedsystems.com/pdf/Wagner/Forms/80/80-333.pdf

It seems that the model I have is not exactly the same but the wiring is close enough to figure out what I need to do to get it working.

If any of you have a suggestion for a better Engine Protection kit that would replace this, I am all ears. 

Thanks.

-Sean
Logged

'Cause you know we,
we live in a van (Eagle 10 Suburban)
Driving through the night
To that old promised land'
buswarrior
Hero Member
*****
Offline Offline

Posts: 3571


'75 MC8 8V71 HT740




Ignore
« Reply #2 on: February 21, 2013, 01:09:12 PM »

ACKH!!!

Is that the evil auto shut down control box?

Two schools of thought are out there:

1) leave it operative for automatic engine protection

2) render it inoperative, the busnut will make the decision as to when and where the engine will be turned off.

If you have ever had it activate out in the hammer lane in fast moving traffic, your choice may be biased to #2...

happy coaching!
buswarrior



Logged

Frozen North, Greater Toronto Area
eagle19952
Hero Member
*****
Offline Offline

Posts: 1383




Ignore
« Reply #3 on: February 21, 2013, 08:28:35 PM »

IIRC that is a 1980's technology that sucked when it was new and still does.
The old straight temp and oil sending units workrd for ever and still do.
I quit working for an outfit that brought me a big box full of those to install on a fleet of stationary Detroits that were being used on tunnel work. The company thought they would make the Mine Safety inspectors happy....dumb.
Logged

Donald PH
1978 Model 05 Eagle w/Torsilastic Suspension,8V71 NA, DDAllison on 24.5's 12kw Kubota.
Wants Paint Smiley
Previously owned by Wee Willie Ent.
belfert
Hero Member
*****
Offline Offline

Posts: 5474




Ignore
« Reply #4 on: February 22, 2013, 08:28:02 AM »

I know people don't like these, but if anyone ever upgrades to a 4 stroke with electronics they pretty much all have shutdowns built into the ECU.  Some of the buses one can override the shutdown with a switch to get off the road.
Logged

Brian Elfert - 1995 Dina Viaggio 1000 Series 60/B500 - 75% done but usable - Minneapolis, MN
Len Silva
Hero Member
*****
Offline Offline

Posts: 4086


Angle Parked in a Parallel Universe


WWW

Ignore
« Reply #5 on: February 22, 2013, 10:07:20 AM »

If I had such an operating system, I would re-configure it to sound a loud alarm up front rather than shut down the engine.
Logged


Hand Made Gifts

Ignorance is only bliss to the ignorant.
luvrbus
Hero Member
*****
Offline Offline

Posts: 13126




Ignore
« Reply #6 on: February 22, 2013, 10:22:06 AM »

That system was a option on Eagle buses they are a PITA to keep operating me I would toss it,if he wants that type system I would go with the Murphy a simple better system JMO

good luck
Logged

Life is short drink the good wine first
Seangie
www.herdofturtles.org
Hero Member
*****
Offline Offline

Posts: 921


And We're Off... Like a Herd of Turtles


WWW

Ignore
« Reply #7 on: February 22, 2013, 01:28:21 PM »

Thanks guys.

I think I am going to go with Cliff on this one and toss the thing out.  I can see where it makes no sense in my case.  I've got to agree with Len on this one.  Alarms make more sense to me. 

-Sean
Logged

'Cause you know we,
we live in a van (Eagle 10 Suburban)
Driving through the night
To that old promised land'
eagle19952
Hero Member
*****
Offline Offline

Posts: 1383




Ignore
« Reply #8 on: February 23, 2013, 07:41:48 PM »

a simple overheat shutdown is the only way to protect your investment.
by the time your alarm sounds you can have done $1000's of dollars in damage...I would rather shut down in the middle of interstate 45 in downtown Houston than try and get out of traffic while an alarm is blaring and my motor is melting.
My over-temp shut down has saved me twice in 10 years.
once near williams AZ and the other in NM.in the summer with 3 digit ambient temps....
Logged

Donald PH
1978 Model 05 Eagle w/Torsilastic Suspension,8V71 NA, DDAllison on 24.5's 12kw Kubota.
Wants Paint Smiley
Previously owned by Wee Willie Ent.
Len Silva
Hero Member
*****
Offline Offline

Posts: 4086


Angle Parked in a Parallel Universe


WWW

Ignore
« Reply #9 on: February 24, 2013, 07:02:22 AM »

When I was a younger man, I am confident that there would not have been thirty seconds passed that I had not scanned the instruments and mirrors.  I am simply not that good a driver these days and I know it.  I can use all the help I can get, and system alarms are just a part of that.
Logged


Hand Made Gifts

Ignorance is only bliss to the ignorant.
Gordie Allen
Full Member
***
Offline Offline

Posts: 244



WWW

Ignore
« Reply #10 on: February 24, 2013, 07:32:32 AM »

I know the opinions on this are split.  I chose to get rid of ALL original wiring, including the shutdown circuit.  A 57 year old wiring system is not only unreliable, but dangerous.  About 80% of the original wiring is unnecessary - air conditioning, passenger lighting, call system, etc.  When I looked at the wiring diagram for the shutdown system, it appeared too complex to be reliable.  The default for failure of a component in this circuit is engine shutdown - most of the time.  A faulty temperature sending unit will not shut the engine down.  I prefer to be the engine protection system.  All critical monitoring is redundant on mt bus.  I have a water temp gauge from one sending unit plus a telltale sending unit set at 190 degrees.  If my gauge says 190 and the telltale agrees, it's time to take action.  Same with oil pressure, etc.  Today's electronics are far more reliable than the old electro-mechanical circuits from the 50's and 60's, but even these are not fail-safe.  I can see the value of these systems for unattended gensets, but if you've got all the information right in front of you and redundant, I'd rather be the monitor, than be sitting on the side of the road trying to figure out where the engine shutdown circuit failure is.
Logged

Augusta, MI
1956 4104
DD 671
luvrbus
Hero Member
*****
Offline Offline

Posts: 13126




Ignore
« Reply #11 on: February 24, 2013, 07:43:04 AM »

Nothing beats a gauge and good eyes when a old DD shuts downs most of time it to late without water circulating they just set and cook they can reach over 250 degrees after shutdown there goes the heads without water to cool down the 1200 degrees the combustion reaches 

GM's are the worst they always crack the top head never the lower that is easy to replace lol

good luck
« Last Edit: February 24, 2013, 07:46:38 AM by luvrbus » Logged

Life is short drink the good wine first
buswarrior
Hero Member
*****
Offline Offline

Posts: 3571


'75 MC8 8V71 HT740




Ignore
« Reply #12 on: February 24, 2013, 08:10:11 AM »

There is a VERY big difference between an alarm system, and an auto shut down.

The auto shut down is there to protect the equipment from an IDIOT hired driver, who will just keep driving once the dashboard lights have lit up and the alarms are sounding. If it wasn't true, why would anyone have invented the shut down in the first place?

The older ones were brutish, and leave the driver little choice, the modern electronic ones give the driver a chance to act. My comments are related to the old style ones.

If a busnut who owns and pays for the equipment isn't smart enough to heed the warnings of the alarms, well, natural selection will take its course.

If your coach does not warn you before the auto shut down engages, then FIX or MODIFY it so that it will.

Your engine is not going to grenade in the next 10 seconds just because the temp has reached the alarmstat limits, which is the usual suspect. Loss of oil pressure is misadventure and/or poor maintenance.

The engine still turns once the auto shut down engages, and if you do something foolish like shift to neutral to make it stop turning, you lose the power steering as well.

So, with the cursed thing disconnected, the alarms sound, you get a surprise, you look at the dash, compare what you see with what you were doing to the coach and make some decisions. Maybe just slow down and gear down, you're pushing it too hard climbing the hill. Increased water flow and fan speed, decreased load, alarm goes out in 25 seconds as engine temp drops below the threshold. Or, if you want, you look for a way to get off the road, you reduce the demands being put on the engine, and get to a safe stopping spot of your choosing, with the coach operating as you expect it.

Compare that to an auto-shut down event: Wham, alarms, lights and no engine running. PANIC. Losing speed. In order to get the engine back, auto shut down requires you to do extra things that you haven't practiced, push some button, can't remember exactly, traffic whizzing by, can't get over, speed dropping, horns blaring, tractor trailer almost clips your mirror, haven't tested its proper functioning, don't know how to test its proper functioning, under the stress of alarms buzzing, and the trump card, it's your spouse driving, not you... and rolling to a stop in a travel lane on a twisty mountain climb with a shoulder only a tantalizing 50 feet further ahead?

Or, if it really goes wrong, have you ever considered trying to open the door with a live traffic lane to your right?

Lights and alarms, all confirmed and tested for function, wiring and alarmstats upgraded during my ownership, are all I would like, thank you, its my engine.

I already have to pay for the consequences of bus ownership, this is no different?

happy coaching!
buswarrior









Logged

Frozen North, Greater Toronto Area
rusty
Sr. Member
****
Offline Offline

Posts: 363





Ignore
« Reply #13 on: February 24, 2013, 08:37:17 AM »

My 05 has a warning system on it ( I think it is essex or something like that I would go out in the shop and look but we are in the middle of a bad snow storm). When I first started to drive the bus and all components were new I drove with one eye on the gauges and one eye on the road. The bus now has over 100,000 miles on it and it has never broken down ( knock on wood). I find my self driving for hours not looking at the gauges as I have become complacent. I now am one of the idiot drivers and glad I have the system to warn me if something is going wrong.

Wayne
Logged
buswarrior
Hero Member
*****
Offline Offline

Posts: 3571


'75 MC8 8V71 HT740




Ignore
« Reply #14 on: February 24, 2013, 08:41:18 AM »

Rusty, idiot drivers ignore the warnings when they go off.

Completely different than a driver who has learned to stop obsessing over the engine conditions.

Remember, none on here are normal.

Obsessive behavior is rampant and encouraged.

We own buses.

happy coaching!
buswarrior
Logged

Frozen North, Greater Toronto Area
Pages: [1] 2  All   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!