 Alternator/Voltage Regulator issue, Alternator light is on until rpm's increase |
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| PDXMike |
 Jul 26 2019, 09:41 AM
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#1
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Slowly Learning  Group: Members Posts: 111 Joined: 20-December 10 From: Portland, OR Member No.: 12,501 Region Association: Pacific Northwest  |
My alternator light stays on after I start the car. It was dim, and it would go off (and stay off) as soon as I got the RPMs up over 1000 or so. I did eventually find a faulty connection between the battery and the Voltage Regulator, which I thought would solve my problem. Instead, I now have a similar condition except that the charge light is on full bright (not just dim, like before) until I blip the rev's up a bit. It will still go off and then stay off for the rest of the time the car is running.
With the car running at about 1000rpm I am getting 14V at the battery. Pulling the VR and shorting D+ to Df results in 16-17V at the battery, so I am assuming my alternator is good. I thought there was something going on with the VR not applying enough voltage to the field at start-up, so I ordered a replacement. They new Voltage Regulator is an AC/Delco part, not the OEM. I have exactly the same issue with the new Voltage Regulator. Any ideas? Thanks! Mike |
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| Chi-town |
Jul 26 2019, 03:52 PM
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#2
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Senior Member Group: Members Posts: 850 Joined: 31-August 18 From: Disneyland Member No.: 22,446 Region Association: Southern California |
Usually most alternators won't excite till 700-900rpm
A normal cold start high idle would take care of that but a hot restart may take a blip of the throttle to get it done. |
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Posts in this topic
PDXMike Alternator/Voltage Regulator issue Jul 26 2019, 09:41 AM
914Sixer Do you have a spare relay board to swap out? This ... Jul 26 2019, 10:21 AM Spoke If the alternator works all the time when running ... Jul 26 2019, 10:34 AM 904svo Try cleaning fuse #9 connections, this fuse supply... Jul 26 2019, 11:39 AM Rand I haven't heard of bootstrapping a 914. It is ... Jul 26 2019, 02:50 PM
mikesmith
I haven't heard of bootstrapping a 914. It is... Jul 28 2019, 11:15 AM PDXMike I'll check and clean the number 9 fuse, the gr... Jul 27 2019, 04:53 PM SirAndy What engine? My /6 does the same thing and i have ... Jul 27 2019, 11:22 PM PDXMike '75 with a 1.8.
What engine? My /6 does the ... Jul 28 2019, 10:34 AM porschetub
What engine? My /6 does the same thing and i have... Jul 30 2019, 08:48 PM Rand Yes I know where the term came from long ago. I le... Jul 29 2019, 05:04 PM Spoke
Yes I know where the term came from long ago. I l... Jul 29 2019, 08:33 PM |
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