We have a '92 3.9l 2wd Dakota that won't start. We don't have any
voltage on the dark green/orange wire @ the coil, injectors, pin 57 @ the
ecm. We have tried another ecm - same problem. All fuses are fine, there
doesn't seem to be any broken wires. Any ideas?
Thanks in advance.
No, the fuel pump is powered by the fuel pump relay. Both the fuel
pump relay and auto shutdown relay are fed by the same fuse and activated by
the ECM on a single wire. From what you are saying you have a bad auto
shutdown relay or an open wire to the relay.
Ignition voltage ??? Not sure what you mean by ignition voltage but the
injectors and coil should both have 12 volts. These are powered by the auto
So the dark green/orange @ the coil/injectors is an input to the ecm?
I was told it was an output. If I put power to that wire at the coil, the
injectors get power as well as the ecm and right over to the relay box on
the left front fender. Still no start. We have no injector pulse during
crank with that wire manually powered up as well. The ecm originally called
for crank sensor and cam sensor. Both were changed.
No. The first problem was distributor. The distributor got all piled
up inside. It was changed. The codes were after this. We are wondering
if the distributor problem has caused some other damage. All fuses are
good, all splices seem intact under the hood.
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