Quote:
Originally Posted by lockeed
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Might be a short sipping all the juice? Or the alternator is just gone... But, it seamed to charge the battery fine since I put the car back on the road a couple weeks ago.
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There are myriad reasons for voltage drop - and have to be corrected first before one can expect the computers to run correctly. Typically maxima charge voltage at battery is steady sharp 14.2V while engine running on 'any' rpm.
If battery was good yesterday, it doesnt mean its good today. They can be intermittenlty causing problems... However, see the CDomain alternator, groundings linky's click below.
If you havent lately serviced connections, my guess is that alt is bad/disconnected and/or floating or supply and/or batt wires are oxidized: short will eventually produce smoke, a (oxidated) disconnect just discomford...