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Old 06-15-2011, 05:45 PM   #1
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Car cranks over slow. Whats wrong?

After I drive my car and get the engine warm, It wont restart. It cranks over very slowly and drains the battery very fast. If it cools down it cranks normal and fires right up. Whats up with this?
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Old 06-15-2011, 05:54 PM   #2
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Sounds like either your starter getting heat soaked and going bad or it's time for new grounds.
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Old 06-15-2011, 06:04 PM   #3
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well, the "mini" starters are known to fail when they get too hot... It is also know that long tube headers can cause the starter to get too hot much easier than shorties do. It is a very good possibility it is the starter. As someone else said this also could be a power/ground issue. What you may be identifying as a dead battery could actually be caused by either the power or ground wires not allowing current to pass. The heat may be causing some sort of expansion in the power or ground wire causing the wire to not allow amperage to pass thru the wires, so while 12 volts may be present, the wire doesnt allow the amperage to pass causing the slow/sluggish cranking. when the battery dies, have you tried going back a few hours later to see if the car will start easily? if so, is the battery in fact dead?
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Old 06-15-2011, 09:07 PM   #4
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Once everything has a chance to cool down it will crank right up. Im tempted to bring the batt back up front as much as I dont wont to. Look better with it in the trunk, but just one more thing to go wrong I guese
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Old 06-15-2011, 09:24 PM   #5
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when's the last time you replaced the starter?
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Old 06-15-2011, 09:29 PM   #6
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Plenty of people have batteries in the back that work fine... It's obviously your call but I'd find what is causing the issue. Hot/weak starter sounds like the issue since it cranks right up after cooling off. It wouldn't be the battery.

Hot cables won't cause an amperage passing through issue... The current passes around the outside of each strand of wire in the cable and it's not going to affect this. But do check the tightness of all of the connections and check for corrosion.
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Old 06-15-2011, 10:02 PM   #7
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Check your grounds, and battery cables. Make sure there isnt any/too much corrosion... then if nothing is found, start looking to replace starter.
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Old 06-15-2011, 10:07 PM   #8
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I'm having the same issue, but my starter is ancient.
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Old 06-15-2011, 10:27 PM   #9
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Get a amp draw meter. It will tell if starter is problem.
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