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Discussion Starter #1
Hi!

Last week i drove my 1996 F250 7.3 psd, ran just fine. Parked it for a couple of days and my batteries are almost completly drained. I tried to jumpstart my truck with my other "truck" (Isuzu pup diesel) without luck. My truck just clicks rapidly when turn on the ignition.

After no luck with jumping the car i hooked up my Ctek battery charger on to the passenger side battery over night, Still not enough voltage to crank the Engine, just "clicking" everywhere and the CEL and ABS light wont turn off and the speedometer jumps a bit when i turn to ignition.

The batteries are good (not fully tested yet though) terminals to battery are in good shape, no corrotion etc. The alternator are fairly new with around 1000km. The starter are also fairly new.

Could there be any damage to the electrical system when i tried to jump the car with such low voltage?

:confused:
 

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PSN intsigator
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I would check your battery cable connections all of them and both ends of each cable. Sounds like a bad connection.
 

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PSN intsigator
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IIRC the small wire off the passenger battery is where your unswitched power comes from. No power through that wire will not let the pcm or dash work

Sent from my super awesome outdated Samsung phone while waiting for masakimms# 500mA overdraw draw to catch fire which turd will be blamed for and we will be sitting on dustybumpers tailgate watching the fire and plotting against yommy.
 

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You need to get both batteries up to full charge and then have them tested. I have seen batteries go bad in a matter of minutes. It doesn't take long for a shorted cell to kill one.

When you say that your batteries are good, how do you know that they are good without testing them. The rapid clicking is the relays trying to lock in which is a sign of low voltage.
 

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Discussion Starter #7
This morning after i charged the battery it started up just fine, don't know what was the problem except low voltage. In the coming weekend i'm going to brush up all the ground wires and test both batteries. Don't want to have bad batteries now that the Winter is coming. I'm also gonna se if i can find what drain the batteries, my guess is the stereo.


Thanks for your replys
 

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If it is getting colder where you live the cold might be the culprit. The cold will take a marginal battery and turn it into a brick overnight.
 
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