1996 Maxum Won't shut Down

eris1

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Jul 26, 2010
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I have a 1996 Maxum with MerCruiser Alpha One that won't shut off when I turn the key back. To shut engine off, I have to pull positive terminal from battery. I changed the ignition switch with no luck. Any help is appreciated.
 

alldodge

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Mar 8, 2009
Messages
40,583
What motor?
Do you have a TKS carb?
If so its probably the diode has shorted out
 

alldodge

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Staff member
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Mar 8, 2009
Messages
40,583
Being a 96 and 5.7 I'm not to sure it has a TKS carb, probably doesn't.
It could be the ignition key switch is not disconnecting power from the purple wire. See if there is 12V at the key switch with the key OFF. Then disconnect the purple wire from the key. If 12V stays on the purple wire then its not the key switch, but if it does then need a new key
 
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