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1994 Plymouth Voyager

Question: no spark @ coil while engine cranks

Question

mongoman, 2.5L 4 Cylinder, Milladore, WI, April 23, 2011, 12:11
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 Rookie

have 94 voyager 2.5 TBI engine. for past 2 years engine would occasionally refuse to start but when "wiggling" the connecter @ bottom of coil the problem would resolve for a day, a week, a month but just wiggle it and it was fixed. not anymore. replaced the 2 pole connecter on the black and grn/w orange stripe coil feed wires, installed new, coil, PCM, ignition switch, repaired broken light gauge ground wire to engine block, different distributor all to no avail. Am told by manuals to fabricate a "jumper wire" to condemn or exonerate PCM (known to be good but for the sake of completeness....) and this jumper is to be made of a .33MF (micro fared) capacitor BUT @ what VOLTAGE RATING??? 12V 24V, 400V????? this test will supposedly cause either a spark when grounded which says BAB PCM or noo spark which means an open circuit. Any ideas AND what VOLTAGE RATING on the .33 MF capacitor????

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  • Answer #1

    Johnny Mopar April 28, 2011, 14:21
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     Master

    Sorry, I never heard of this "Jumper Test". Check fuse #3 which feed the contact side of the ASD relay providing power (12v) to your ignition coil and injectors, Check the continuity of the wires to your Distributor pickup plate (3) wires) and Crank Position Sensors. Without the Crank Position Sensor input, The ADS relay will not actuate and your will have no fuel or ignition.

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