Question about Ranger Communications 1998 1999 2000 Ford Ranger Double Din Radio Install Kit
No spark in the spark
You will have to prove out the wiring to make sure there are no shorts, opens, or poor connections. If there are no wiring problems, then the EEC may be at fault. The crank sensor produces an AC voltage signal that may be getting corrupted by the time it reaches the ignition module, due to bad wiring. Make sure to verify whether the ignition module is receiving a clean strong signal by using an oscilloscope or at least measure the signal with an AC voltmeter at the ICM connector while cranking the engine. The voltage will vary with speed, you are looking for a steady signal that doesn't drop out or become erratic. You can run new wires, and make sure they are not connected to possibly shorted sections of the old wiring, by cutting the old wires off at the connectors and connecting new wires to the cut ends. Or replace the connectors and wiring if you suspect that the connections are bad. Inspect carefully for damaged terminals that won't make a good tight connection with their mating pins when connected.
Here is a basic diagram of the entire system, it is common to all the distributorless units even though this one shows a 6-pack coil.
Zoom Image link HERE.
First I sugest to check to see if the check engine light comes on key on engine off. Chekc the EEC Power relay in the fuse box switch with another relay (underhood fuse box, called PCM power relay). Check ground connectiosn.
Zoom Image link HERE.
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Posted on Feb 13, 2012
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Posted on Jan 02, 2017
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