HELP ! IPDM, Starter, Battery, Alternator?
#46
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iTrader: (11)
Not a myth. That's how I usually check alternators in a pinch. Disconnect the positive lead and if the engine dies, alternator or the connections to the alternator is not functionning correctly. Just do not perform this in wet conditions(especially with the weather now) and never let go of the positive lead as if your alternator is good and you ground out the positive, I really am not certain what would happen but it is likely not to be good.
If you use a voltmeter to measure voltages even with reving the engine, I am not sure if it will increase pass 14.5 volts or so regardless.
If you use a voltmeter to measure voltages even with reving the engine, I am not sure if it will increase pass 14.5 volts or so regardless.
#47
before start up was around 12.2- 12.5vDC. during start up it didn't dip too much. after start up is stayed around 14.3. I disconnected the positive terminal on the battery. the engine has been running around 15 minutes on the alternators power. it has very slowly been dropping voltage. the lowest it's dropped so far is to 13.8. reving the engine doesn't really make a difference in the voltage like I expected it to.
been running good so far. i'm debating what to do. I can't imagine a bad battery would cause a car to stall... maybe it shorted internally and robbed power from the alternator? is this possible? i'm used to working with AC voltage and things like that happen all the time...
i really don't want to get stranded again. that's a real bummer... do you guys think it would be worth removing the alternator to have it bench tested at an auto parts store? am I already doing the equivalent of a bench test? how difficult is it for someone who's never done this to remove that belt and drop out the alternator?
been running good so far. i'm debating what to do. I can't imagine a bad battery would cause a car to stall... maybe it shorted internally and robbed power from the alternator? is this possible? i'm used to working with AC voltage and things like that happen all the time...
i really don't want to get stranded again. that's a real bummer... do you guys think it would be worth removing the alternator to have it bench tested at an auto parts store? am I already doing the equivalent of a bench test? how difficult is it for someone who's never done this to remove that belt and drop out the alternator?
#48
Registered User
iTrader: (11)
Go to the auto parts store and have them run a "load test" on it. Today's fuel injection systems take up to 40 or more amps of power off the electrical system. If your battery is weak, it can affect the injection system. Especially at idle while the AC is on, Music is blaring, lights on etc.
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RemmyZero
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