ECU cut on crank

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Eragon240
Posts: 3
Joined: Wed Oct 06, 2021 11:35 pm
Car: 1991 Nissan 240SX S1 RB25DET

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having an issue where whenever I crank my ECU will lose power. all of my connections seem good and I have no issues with ECU power until cranking. Are there any usual culprits of power draw that I should check first?

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VStar650CL
Technical Expert
Posts: 11916
Joined: Thu Nov 12, 2020 1:25 pm
Car: 2013 Nissan Altima 2.5 SL
2004 Nissan Altima 2.5 S

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Sounds like either your battery doesn't have enough CCA to crank or you have a bad connection someplace in your cabling.
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