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Re: get a meter and diagnose
Posted by JohnK (more from JohnK) on Tue, 15 Feb 2005 10:13:57
In Reply to: Car wont start unless jumped. Battery good., dedreux, Mon, 14 Feb 2005 14:10:33
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I think your battery is discharged. Battery could be good or bad, but i don't think that the alternator is charging it. Make sure that your alternator ground wire is good...small black wire from alternator frame. Ohmmeter should read close to zero ohms between the alternator frame and the engine block.
When you turn ignition to on, but not start, the alternator warning light should come on. If not, check for bad bulb. Bulb must be good to charge battery.
A fully charged battery will read close to 12.6 volts accross terminals with ignition off.
When the engine is running after jumper is disconnected, you should get a volt reading greater than 13.5 across the battery terminals. If not, the alternator is not functioning properly. Could be worn regulator brushes or the alternator is bad.
posted by 208.208.152...
Posts in this Thread:
- Car wont start unless jumped. Battery good., dedreux, Mon, 14 Feb 2005 14:10:33
- Could be a bad battery post..., Glen, Tue, 15 Feb 2005 15:15:53
- Re: get a meter and diagnose, JohnK, Tue, 15 Feb 2005 10:13:57 <-- Viewing This Message
- Re: Car wont start unless jumped. Battery good., JimBlake
, Tue, 15 Feb 2005 06:39:56 - Check your battery terminal connections. Loose..., RayF, Mon, 14 Feb 2005 15:02:34
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