Atoms' Gremlins again-

[adam metzger]

Hey all-

did a good 6 hours of wiring yesterday. coach started right up, so I think we're good!

at least for now-

because I keep finding these things

can someone help me with this little prize?

http://s66.photobucket.com/user/adammetzger/media/WTF1.jpg.html

http://i66.photobucket.com/albums/h252/adammetzger/WTF1.jpg

this is black wire stripped at end, green wire with male bullet type connection passing through stripped black wire end, then taped.

http://s66.photobucket.com/user/adammetzger/media/wtf2.jpg.html

http://i66.photobucket.com/albums/h252/adammetzger/wtf2.jpg

as I pulled on it to see where it ended, this came up from. It was simply dangling down the side of the valve cover.
It obviously has a plug, but any ideas where it goes? to a ground no doubt.

I spent a good amount if time opening looms to inspect yesterday. There is a loom into the engine area at the top front right of the engine, looking
down from the top. it splits across the top of the engine to the left, going to the alternator, and another bundle of wires goes to the rear, along
the right top of the engine, near the right valve cover.

one of these looms was in really bad shape, like it had melted from either engine heat or fire.

http://s66.photobucket.com/user/adammetzger/media/wtf3.jpg.html

http://i66.photobucket.com/albums/h252/adammetzger/wtf3.jpg

could straight engine heat do this? the wires inside seemed okay, if not a bit worse for the wear-

http://s66.photobucket.com/user/adammetzger/media/wtf4.jpg.html

http://i66.photobucket.com/albums/h252/adammetzger/wtf4.jpg

I replaced all the loom in the engine compartment, and will keep an eye on it.

--
1976 Palm Beach
Austin, TX

 

[charles boyd]

Sir, it looks like po has changed AC compressor to Sandon. The dangling plug is to oem compressor. New connector scabbed in to it?
--
C. Boyd
76 Crestmont
East Tennessee

 

[Matt Colie]

Good Hunting Adam,

I think you win the incompetent PO of the year award here. Maybe the Decade....

That loose connector does look the one that goes to the A/C clutch. That one does ground nearby in my '73.

The melted loom was heated from the outside. If it was on top of the engine, in the valley, there is the heater (cross over) there and the hot part
of the choke system that are all good suspects.

Keep at it, it will turn out to be worthwhile.

Matt
--
Matt & Mary Colie - Members GMCMI, GMCGL, GMCES
'73 Glacier 23 - Still Loving OE Rear Drum Brake with Applied Control Arms
Now with both true Keyless and remote entry
SE Michigan - Twixt A2 and Detroit

 

[RF_Burns]

I can't see exactly where along the top of the engine your loom and wires are cooked and melted. I wondering if it was close to the choke stove. The
crossover exhaust gases get the intake manifold hot enough to burn the paint off the intake and even crack it. If it is by the choke stove, check the
gasket there to be sure it is not leaking exhaust gases.

--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
Hubler 1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that

 

[adam metzger]

Thanks, Y'all. I'll look into the choke pipe.

birds eye view of the engine compartment, this loom runs down the right side of the engine, on top, between the carb and the valve cover on the right.


is there a engine schematic that describes pipes, tubes and lines the way the electrical schematic does? I'd loove to have a better idea of what I'm
looking at.

I'm gonna get good at this, dammit.
--
1976 Palm Beach
Austin, TX

 

[Ken B]

Get that loom up off of the intake manifold. Especially right where the loom goes by the carb. There is a very hot exhaust crossover that goes under
the carb. It gets hot enough at times to burn the paint off of the intake and will definitely melt the wire loom if it touches the intake in that
area. Use a couple of cable clamps mounted by the valve cover bolts to raise that loom up off of the intake in that area.

Checking the stove pipe gasket, as previously suggested here, is also a good recommendation. That blown gasket is what started my engine fire 7 years
ago.
--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana