David Feinberg (Fastradio2)
Member
Username: Fastradio2
Post Number: 309
Registered: 4-2002
| | Posted on Saturday, September 06, 2003 - 5:59 am: | |
Good morning Billy,
There are a few things that I would check, starting with the battery itself.
Open circuit voltage, when testing a battery is not a meaningful measurement of its condition. I presume you put a voltmeter across the battery terminals to read the 14.2 volts..Yes? I'd start by removing the battery from the car, and have someone test it under load...a device that simulates a high current draw load.
Next, I'd clean and inspect all the electrical connections at the battery, cut-off switch and battery ground point. I confused by your statement that the "battery has voltage" when you switch off the cutoff switch....Why wouldn't the battery have power, regardless of the switch position? The switch disconnects the car from the battery...
I believe that the problem lies within the alternator, but I would do the above tests first to confirm the battery condition and related connections.
Alterators typically will whine when they are asked to deliver maximum output, either due to load conditions, such as a partially discharged battery...or excessive current needs such as high internal battery resistance or associated connections.
Yes, the battery cable does split...primarly lead goes to the starter..and secondary leads goes to the fuse box for distribution.
Regards,
David |