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Voltages at coilpack?No start issue!

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rare1

15+ Year Contributor
125
1
Mar 12, 2007
Hamersville, Ohio
I'm testing the voltages at the connector for the coilpack and I'm getting 12v on pin 3,and pin 2 and 1 goes from .5 to 0volts as I spin the cas.Does anybody know if these are correct?I'm diagnosing a no start issue.
Transistors test good( 2ea),coilpacks test good(2ea.),both of my cas are putting out signals on pin 1 when testing. I have tested 3 computers,lights come on for 5 seconds then go out.Tested 2 mpi relays(good).
Get fuel injector pulse and fuel pump,just no spark to plugs!New plugs and wires.Even tested parts on my friends talon.Also tried c.o.p. setup.I've searched for hours reading stuff on everything and no go.I'd figure broken wire in harness but I'm getting voltage to coils just not out to plugs.Help.:confused:
 
Have you checked the ignition control module? It on the drivers side of the intake manifold below the coil pack, it should have 5 to 7 wires running into it, pretty flat and wide plug.
 
Thats the transistor.Yes,2 of them.Both checked good.
 
Yes, checked cas.put jumpers on pin 2,3,4 then turned cas and watched pin 1 with multimeter go from 5volts to 0 volts to 5v to 0v.Fuel pump and injectors fired,spark plugs are wet with fuel.It looks like I'm getting power to coil but not enough to fire spark plugs.

Okay just found out from searching again,there are 2 channels in the cas that you have to check.I'll try it tonight and see if they are both putting out signals.I know 1 is.
 
Okay,here it goes.Hooked up 2 jumpers to pins 3 and 4(12v and ground), and checked output of 1 and 2 on cas.Pin 1 goes from 5 volts to 0 volts when turned.Pin 2 goes from 0volts to .049volts when turned.So would the cas be the problem?Is pin 2 on the cas supposed to do what pin 1 does?Please help.
 
Okay I used a ocillascope and cas are good.1 computer is bad,I wasn't getting power to the transistor.Now I just need to know how much voltage should the transistor be putting out to the coilpack.I know it gives voltage to 2 pins and then grounds it.The other pin is 12v continuous.
 
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