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Enlarged view Fig. 2 (82K) shows damage details with # arrows. # 1 Plastic melted to the point that fuse end connector is no longer supported. Note how the riveted connector to wire area of the metal has started to corrode in an accelerated manner due to being heated and cooled for a period of time. # 2 Base of adjacent fuse end is starting to show signs of melting.
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Early
Z Car Fuse Block Melt Down Problem
If the main fusible link between the fuse block and the battery malfunctions or a previous owner has replaced the fusible link with a non-fusible wire, there can occur a costly wiring harness melt down under the dash or in the engine compartment. Smaller illustrations to left show an overview of the problem. To see damage close up, click on left most image. Compare your fuse block to the example to see what stage of damage, if any, your fuse block is in. New owners need to be alert for this potentially serious problem hidden out of view. Visually check the fuse block before buying a used 240Z. Fuse
blocks with modest damage can often be repaired if detected in time. See
my IZCC Tech Post page for several suggested
solutions. Note: This ZP Tech Tip is only partially finished, but the photo of typical damage may help new 240Z owners become of aware of this problem before they get stranded far from home. Feed back from viewers about problems of viewing, understanding or navigating this test page would be most appreciated. Pleases send your comments to Eric at eric@zparts.com |
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Enlarged section on left showing damage where corroded fuse contact was
next to plastic 240Z fuse block. The problem arises due to corrosion build
up on the back side of the fuse block connectors where the main lead from
the battery connects. When the electrical resistance caused by the corrosion
reaches a certain point the metal connectors and their supporting base
heat up to the point that the fuse block plastic base melts to the point
that either the fuse end connector comes loose or a fusible link in the
wiring harness fails.