Question about Ford Econoline
I MUST assume that you have already determined that this is a problem.... That the vehicle does not start and run.... With at assumption in place.....
Probably a bad connection between the ignition key contact and the coil. I am not aware of a resister in the Econoline ignition circuit... but some high performance (older) ignition HEI coils had a large resister in series with the battery (12 volt) feed.
The design of the resister was to limit the feed to the coil - to prevent arcing the wires. I do not think that was installed on engines other that the Boss 302, HiPo 390 and the 427. So, I will stick with the bad conductor (terminal rust, loose terminal lug, etc.
Consider (with the voltmeter connected) tapping on the ignition key switch, on the connector at a the center of the steering column, on the starter relay 12 volt lead, on the ignition relay at the fuse panel.... and anywhere else you can think of - while watching for a change in the voltage.
Posted on Oct 26, 2009
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Posted on Jan 02, 2017
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Fig. Fig. 1: Engine ignition coil harness connections-3.0L and 4.0L engines
Fig. Fig. 3: CKP sensor wire harness connections for the 4.0L (VIN X and E) engines
If there is power and both the coils and sensor check good, replace the ignition control module.
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