Alt warning light came on

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May 24, 2011 | 01:32 PM

Schuyles

Thread Starter

Laughing Gas

Joined: May 2008

Posts: 1,130

Likes: 3

From: Hendersonville, TN

Alt warning light came on

1965 f100 240

the "alt" light stayed on today, and the engine seemed to be running a little rough. The engine thing might have been me being paranoid, but the light is definitely on.

I am going to stop by autozone on the way home to have them check the battery and alternator. The battery is 5 years old, and the alternator...who knows. I've never changed it.

Any other suggestions?

May 24, 2011 | 02:36 PM

CropDusterMan

Elder User

Joined: May 2010

Posts: 957

Likes: 3

From: Valley Center, CA

I'd check your grounds too, be sure there is a good contact there...corrosion maybe?
Good luck....BTW, how do those college girls like your old Ford?

May 24, 2011 | 09:48 PM

garbz2

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Joined: Nov 2000

Posts: 6,060

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From: Glendale Arizona

Tap on the voltage regulator as they stick.

Garbz

May 26, 2011 | 01:51 AM

Schuyles

Thread Starter

Laughing Gas

Joined: May 2008

Posts: 1,130

Likes: 3

From: Hendersonville, TN

I took it to autozone and they checked the battery (good) and the alternator. He said the alternator was not generating enough power...so for 45 dollars, I bought the replacement. I put it in tonight, and the light is still on.

What else could it be? Voltage regulator? (I tapped on it garbz)

May 26, 2011 | 01:52 AM

Schuyles

Thread Starter

Laughing Gas

Joined: May 2008

Posts: 1,130

Likes: 3

From: Hendersonville, TN

Quote:

Originally Posted by CropDusterMan

I'd check your grounds too, be sure there is a good contact there...corrosion maybe?
Good luck....BTW, how do those college girls like your old Ford?

They can't get enough! I only have one lap belt, on the driver's side, so I always tell them they have to buckle up with me!!

May 26, 2011 | 05:14 PM

garbz2

Post Fiend

Joined: Nov 2000

Posts: 6,060

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From: Glendale Arizona

Replace the cable from the block to the frame and replace the battery cables. Once these are found to be good. then replace the voltage regulator.

Or i would just put a simple one wire GM unit on it and call it a day with junk regulators old wiring and crap.

Garbz

May 26, 2011 | 10:56 PM

Redmanbob

Logistics Pro

Joined: Oct 2005

Posts: 3,785

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From: Mddl A MexCans

Clean up all the connections before replacing parts that are just fine. If the alt is charging like it should then pull the volt reg and remove the cover. Reinstall and watch it to see if the unit is sticking open. The points should open and close as the charge is needed.