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Old 12-05-2019, 05:40 PM
Thread Starter
Join Date: Mar 2019
Posts: 6
No pulse from coil

97 wrangler 4cyl 5speed fuel injection
Im getting power to coil but no pulse out replaced stater cap rotor and coil tryed 2 coil wires and all fuses are good but still no power out what am i missing or can i try

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Old 12-05-2019, 06:16 PM   #2
Join Date: Apr 2013
Posts: 13,158
The coil fires via a pulsed ground from the pcm
Put on a test light and check for the pulsed ground
If not there is wiring or pcm or crank position sensor

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Old 12-15-2019, 01:48 PM
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Join Date: Mar 2019
Posts: 6
New crank sensor still nothing how or what wires do i look into before sending computer off for rebuild
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Old 12-15-2019, 03:09 PM   #4
Join Date: Jan 2019
Location: Round Rock, TX
Posts: 425
You need to test the ground on the ignition coil. It’s a ground that is pulsed by the pcm. Here is how you test it.

testing ground on ignition coil:
The way to test is explained in this video at around 9m.
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