How to test 2g alternator
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From: Mountaineers are Free!
How to test 2g alternator
Have a no charge condition. Have a new alternator and new starter. Battery volts 12.58 not running; 12.01 running.
Read all the posts that I could find on testing the alternator but am not sure exactly how to translate these test to this particular alternator. Please help.
Read all the posts that I could find on testing the alternator but am not sure exactly how to translate these test to this particular alternator. Please help.
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Joined: Jan 2001
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From: Virginia
You can take it to autozone, and they have a machine they can put it on to test it. What you can do is;
Make sure you have voltage on the lightgreen/red wire when the key is in run.
Make sure you have battery voltage with the truck off, on the large black/orange wires.
Make sure you have battery voltage on the yellow white wire with the truck off.
Make sure you have voltage on the lightgreen/red wire when the key is in run.
Make sure you have battery voltage with the truck off, on the large black/orange wires.
Make sure you have battery voltage on the yellow white wire with the truck off.
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From: Mountaineers are Free!
Just got back
Thanks Frank
Just got back with the alternator when I didn't know what else to do. They said it tested okay. I put it back on and checked the O/Bk connections and they have 12.4v same as the battery. Running the G/Rd wire has slightly lower 12.1v
and the Y/Bk wire has still lower 11.8v. I'm really stumped and don't know what to do next.
Can you Help? Thanks
Just got back with the alternator when I didn't know what else to do. They said it tested okay. I put it back on and checked the O/Bk connections and they have 12.4v same as the battery. Running the G/Rd wire has slightly lower 12.1v
and the Y/Bk wire has still lower 11.8v. I'm really stumped and don't know what to do next.
Can you Help? Thanks
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From: Mountaineers are Free!
disgusted
I can't believe I can't get any help on this site. Is it because Ford's are just junk? I've posted a couple times and got the obvious answer and that's it! Is this a FMC front? Is everyone on the FMC payroll? All to con us into thinking a piece of junk Ford can be Fixed! Ha! Ha! I guess I'm a fool again!
Last edited by Ezee4U2C; Sep 13, 2007 at 05:05 PM. Reason: spelling
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From: Virginia
Sorry, I volunteer to do this with no pay, and I have to work for a living.
I think your type alternator is famous for melting the plugs. I would check them very carefully to make sure they are not melted, causing a bad connection. All the voltages look ok, except you should have around 14 volts on the battery when the engine is running.
I think your type alternator is famous for melting the plugs. I would check them very carefully to make sure they are not melted, causing a bad connection. All the voltages look ok, except you should have around 14 volts on the battery when the engine is running.
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