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Engine turns over but wont start, no spark to plugs
#8
try the blow page (DC power tests)

http://www.fixkick.com/ECU/ECU-8v.html#blow


the next test is the ECU actual ground pins
with one test we know whats up

now the 30 amp deal
the wires can not handle 30 amps.
so when the short happened, this causes either the power wires on that feed to melt or the grounds wire. (or both)
in your case both.
the wire next to those melted are, collateral damaged, melted plastic , melts the insulation on a good wire.


top reasons for PO to do that? (used the wrong fuse 100 % over)?
1: fuel pump shorted, or the fuel pump wires shorted, at any point from relay to pump !!!! very common.
2: ECU shorts, all 1992, ECU the Caps in side all short, 1 or 2 caps. all do that 1 time. until you kick those damn rubicons out out the ECU.
3: and short at all in the blue-black feed, (random in nature)


all 2 doors
remove left rear tail light lens, easy.
see those pink big wires, those are pump power
look for burning
and make sure the 2pm pump ground lug to body there, is not bad. it loves to fail here. loves. its exposed to road salts.
http://www.fixkick.com
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RE: Engine turns over but wont start, no spark to plugs - by fixkick - 10-30-2014, 10:59 PM

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