Jump to content

Recommended Posts

Hi had a charging dust up on my '69 2002. Charging light came on - tested voltage at battery and wasn't charging, next I tested the regulator (jumped contacts) and it seemed faulty. I replaced with one i had in parts bin (had no idea how it got there...). Then tested voltage at battery and at idle had a good health 14volts, when rev'd however, the voltage dropped...curious. I then replaced the Alt with a known good one and put the old regulator back on, now it's all good, healthy volts at battery and rises with revs. it seems that the alternator was bad but regulator was good. any ideas? thanks, chuck

Link to comment
Share on other sites

Coupla random thoughts...

1.  old voltage regulator had stuck points; removing & replacing it unstuck 'em


2.  replacement regulator wasn't compatible with your original alternator:  '69s had 35 amp alts, later cars had 45.


3.  the heavy ground wire that runs from the alternator body to the block wasn't making good contact; swapping alts cleaned up the terminals.


4. diodes in the original alternator have died--test old alt at your local auto parts store and see what's wrong with it.




Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.
With your permission we and our partners may use precise geolocation data and identification through device scanning. You may click to consent to our and our partners’ processing as described above. Alternatively you may access more detailed information and change your preferences before consenting or to refuse consenting. Please note that some processing of your personal data may not require your consent, but you have a right to object to such processing. Your preferences will apply to this website only. You can change your preferences at any time by returning to this site or visit our privacy policy.