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Registered
Join Date: Jul 2008
Posts: 3
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Red light off death / Alternator Voltage Regualtor Problem
Hi,
Just got my car back from it's annual service at a Porsche centre in the UK and on the way home the red light of death started winking at me everynow and again. I can't seem to get it to come on permanently, only when dropping down the revs when driving. The car is now in the drive and it won't light up. BUT Digital volt reader on the battery says: - 12.3 - Engine off 11.76 - Engine running (No red light) I have had a 'fiddle'with the wires in and around the VR to check there are no loss wires, all appears to be ok. The '101 Projects..' book states the following about a non red light: - Alternator indicator lamp does not light when the ignition key is turned on.
Any ideas... |
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07-24-2008, 01:46 PM
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Born to Lose, Live to Win
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im no expert but - did they mess with the belt? they may have left it a little loose and now its slipping, which is why its coming on and off. did they get grease on it? ide start with examining the belt for tension, correct amount of shims, grease etc...
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Things fall apart; the center cannot hold… 1983 911sc 2025 Chevy Colorado ZR2 |
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07-24-2008, 02:46 PM
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Born to Lose, Live to Win
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oh...i didnt grasp that you had a no light situation with the key turned.... cant help you there. sorry. someone here will be able to help im sure so stay tuned
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Things fall apart; the center cannot hold… 1983 911sc 2025 Chevy Colorado ZR2 |
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07-24-2008, 02:48 PM
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Registered
Join Date: Jul 2008
Posts: 3
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UPDATE:
I have had a new alternator fitted. It is the internal regulator type. Strange thing is that the red light on the dash is constantly on now. The battery is charging fine when the engine is on. (14v) Also the idle seems to have gone to pot! Any ideas on the red light being constantly on? Regards, Simon |
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07-28-2008, 04:13 AM
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Registered
Join Date: Sep 2003
Location: Vermont
Posts: 1,199
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Check these two threads for wiring / lamp issues when changing from externally regulated to internally regulated alternators:
Should I install a resistor or not? Alternator Issues |
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07-28-2008, 05:08 AM
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Join Date: Jul 2008
Posts: 3
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Great, thank you Deanp. Looks like I need a resistor fitted.
Regards, Simon |
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07-28-2008, 05:29 AM
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Join Date: Oct 1999
Posts: 8,673
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Could also (possibly) be a bad diode in the alternator.
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07-28-2008, 05:46 AM
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Registered
Join Date: Oct 1999
Posts: 8,673
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Could also (possibly) be a bad diode in the alternator.
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07-28-2008, 05:46 AM
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1983 Porsche 911SC 3.0
