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Engine Discussion of preventative/corrective maintenance and other technical issues regarding your coach's engine.

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  #21  
Old 2 Weeks Ago
GregOC GregOC is offline
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Quote:
Originally Posted by Bruce View Post
I wonder how many BB owners check the condition of their coolant with test strips??? If they don't cavitation will be the result.
I have a theory that normal cavitation removes the liner oxide film at some point but stray voltage passing thru the coolant is the bigger cause of liner failure found in engines if under 300,000 miles. Supplemental Coolant Additives (SCA) wont help one bit with stray voltage they may infact increase the conductivity and contribute to the damage. This is why i spend the time to check for voltage drops on grounds, keep battery trays clean, and listen to clues like muffed electrical motors and blinking non familiar electrical appliances.
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  #22  
Old 2 Weeks Ago
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brhodes brhodes is offline
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Here is information Dick posted at https://www.wanderlodgeownersgroup.c...d.php?p=329891 #21:


02/04/2016
KC, Barry, Randy & all; my 88WB 8V92 #76744, does NOT have the "cigar module" TECL (Transmission Electronic Communications Link) or whatever it's called.

KC, the good NEWS is I located my 'hardcopy' MASTER WIRING CHASSIS DIAGRAM, DDEC 1, 8V92!!!! Drawing by BLUE BIRD BODY CO. released 6-23-87; DRAWING 1333566.

THROTTLE POSITION SENSOR (BB35 drawing coordinates)
*Wire 416A to L1 (AMP CONNECTOR)
*Wire 416 to ECM Module (in rear closet road side)
*Wire 417 to ECM Module (in rear closet road side)
* Wire 452B to High Idle Resistors (K5 drawing coordinates)

HIGH IDLE RESISTORS (K5 drawing coordinates)
*Wire 452 to connector J1A ECM MODULE
*Wire 452A to EDU (Electronic Distribution Unit)
*Wire 452B to THROTTLE POSITION SENSOR (BB35 drawing coordinates)

JIA ECM MODULE CONNECTOR
*Wire 416 to TPS
*Wire 417 to TPS
*Wire 452 goes to High Idle Resistors (K5 drawing coordinates)

ECU DIODES
*Wire 255 Red to K18 (dwg coord) CHECK TRANSMISSION RELAY
*Wire 259 Yellow to R18 (dwg coord) ECU RELAY
*Wire 266 Gray to (B25 dwg coord) 20A breaker

ECU RELAY OIL PRESSURE SWITCH

*Wire 265 to ECU DIODES
*Wire 258A to ECU RELAY terminal 87

It appears the ECM used in the DDEC I used Motorola components and some OTS (Off The Shelf) hardware used in late 80s GM vehicles.
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  #23  
Old 2 Weeks Ago
Big Al Big Al is offline
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Quote:
Originally Posted by giderich View Post

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DDec I Drawing 1333566 6-23-87
A copy of the Drawing 1333566 was made at our local STAPLES store and mailed to KC about 3 years ago shortly after a phone conversation with KC.

Most likely that very copy of DWG 1333566, still exists in the BLUE BOX of PASTURE PRIME now owned by Alan Fink & Sally Carlson-Fink of Waupun, WI.

The original copy of DWG 1333566 went with our former 88 WB, now owned by Matt Rivard of Gladstone, Missouri.

Unfortunately, I never sent a copy to Mr. Finn for scanning.

https://www.wanderlodgeownersgroup.c...reply&p=362779

https://www.wanderlodgeownersgroup.c...ad.php?t=24826

Quote:
Originally Posted by giderich
KC, Barry, Randy & all; my 88WB 8V92 #76744, does NOT have the "cigar module" TECL (Transmission Electronic Communications Link) or whatever it's called.

KC, the good NEWS is I located my 'hardcopy' MASTER WIRING CHASSIS DIAGRAM, DDEC 1, 8V92!!!! Drawing by BLUE BIRD BODY CO. released 6-23-87; DRAWING 1333566.

It appears the ECM used in the DDEC I used Motorola components and some OTS (Off The Shelf) hardware used in late 80s GM vehicles.
Dick
I looked through my files and I did not find a copy of that drawing you mentioned. If I do find it, I will post it.


Al
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  #24  
Old 2 Weeks Ago
irstaxhelp irstaxhelp is offline
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Quote:
Originally Posted by Big Al View Post
Dick
I looked through my files and I did not find a copy of that drawing you mentioned. If I do find it, I will post it.


Al

I would like to have it so thank you Dick
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  #25  
Old 2 Weeks Ago
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giderich giderich is online now
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Quote:
Originally Posted by Big Al View Post
Dick
I looked through my files and I did not find a copy of that drawing you mentioned. If I do find it, I will post it.
Al
Al, glad you located the "rolled-up" copy that KC told you not to lose.

https://www.wanderlodgeownersgroup.c...ad.php?t=33228
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  #26  
Old 2 Weeks Ago
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giderich giderich is online now
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Quote:
Originally Posted by Randy Dupree View Post
Ahh!
Did you change the starter or pay for that work?
That makes me wonder if all the cables were put back on the starter,or is one tucked away somewhere?
I have seen it happen before..

I remember KC making the comment that the DC power cable going to the coach ran from a shunt on the bulkhead and then to the starter by a cable,and he was amazed at how small the cable was.
I parted out a 1990wb and when i pulled the engine i noticed the same thing,battery cable goes to the starter and then a small cable went to the shunt on the bulkhead in the engine bay,that cable was too small in my mind.
KC agreed on the cable being too small.

Mr. Wyatt suggested you look at post #13 of The DDEC I Question thread in which Randy D. thinks the "hired professional" who installed the new lightweight starter may have accidentally dropped the cable powering your 12 volt system and I agree this is quite possible. When having trouble ALWAYS check the last thing that was worked on.

Checking for that missing cable coming off the started solenoid should not be that difficult...once the rain lets up.
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