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Old 10-28-2010
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I am: Barry Hanback
Join Date: May 2010
Location: Cypress Inn, Tn
Vehicle: 1988 Ford Ranger
Posts: 1
Total Props: 0
Post 88 Ranger 2.9 V6 Voltage

How much voltage should I have going to coil? Should it be 12 volts? I cannot get any fire to the plugs. I have installed new rotor, distributor cap, plug wires and coil wire. The fuel pump is running.I have read that the inertia switch under the dash turns off the fuel pump during a crash to prevent a fire, and it also said that it turns off the fire. Is it possible for this switch to shut off the fire and still operate the fuel pump? Having problems trying to trace the voltage from the battery to the coil.I had to put a new clutch in it, and have not had any fire since.I put the speedo cable back in, plugged in the wire to the top of the transfer case, and the wire into the side of it or the tranny, don't remember which. Is there something I'm missing? Thanks.
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Old 10-28-2010
I am: Ken Here
Join Date: Mar 2007
Location: Upstate,NY
Vehicle: 2003,Ranger
Posts: 2,598
Total Props: 13
Ignition coils are switched/pulsed on the ground side.
One side of the coil has +12 volts , the other side is switched via the points/ignition module to ground.
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