No spark in the run position

[thall25]

1998 5.7gs. Fires right up when cranking over. As soon as I let the key back it dies. Any ideas on what is killing my spark.

 

[sandkicker]

Defective ignition switch is the first place I'd look.

 

[Curmudgeon]

Pull the switch and clean the contacts. If it's internally compromised, not hard to change out after some due diligence to make sure you get the right one ... :rolleyes:

 

[thall25]

I will check ignition. It would be nice to have an easy fix. Thanks

 

[thall25]

I have voltage across switch to purple all the time when key is on. It actually started and ran for around 30 seconds. I have checked fuel and I don't think that is my problem. coil and module only have around 40 hrs on them. Any ideas?

 

[bondo]

Ayuh,.... Do ya have Power at the coil's (+) terminal, 'n all the purple wires on the motor, with the key "On",..??

If not,.... Check the connection through the cannon plug,....

 

[thall25]

Finally got back in my boat today. I had voltage at coil a few days ago and no voltage today. So I went straight from battery to coil and it starts right up and runs. Can I run a new wire from ignition straight to coil or does that feed other things that I don't know about. I appreciate any help you all may have.

 

[bondo]

Ayuh,.... Why not find, 'n fix the problem, rather than runnin' wires nilly willy,..??

 

[thall25]

I have been searching for a wiring diagram but haven't had any luck yet. When I figure out what the ignition wire feeds i should be able to find the problem.

 

[bondo]

Ayuh,... A red wire goin' forward to the keyswitch, powers the purple wires, which are the ignition circuit,.....