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Registered
Join Date: May 2009
Posts: 127
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Idle Falls/Low Voltage - Help!
I noticed today after coming home that the idle will fall drastically, near stall, then jump up again. The battery currently reads 12V on the dash and after a multimeter test, it reads the same when its off and when running.
I suspect that the battery is not charging at all and then car is simply running directly of the battery. Any thoughts, ideas, suggestions, concerns would be very appreciated 
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944S --> 944 turbo S - 2.5L Dry Sleeves, K26/8 Turbo, LR Height Adjustable Motor Mounts (-1/2 in.), LR 3 Piece Xmember, LR 3 Piece Xover Pipe, LR Oil Pan Baffle Kit, 930 Clutch, Lightened Flywheel, Custom RX-7 Oil Cooler, Apexi EBC, Tial 38mm Wastegate, Full 3" SFR Exhaust, etc... |
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08-11-2009, 07:22 PM
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Registered
Join Date: Nov 2006
Location: Raleigh, NC
Posts: 259
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I'd remove the alternator and take it to an auto parts store that tests them for free. If it tests bad, it's likely just the internal regulator that is bad. It's the white plastic piece that attaches to the back of the alt with two screws. Find the Bosch part number on the regulator and search for that number on ebay. You can probably find a new one for less than $20. Or a local starter/alternator shop may have one in stock.
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Dan Former owner of: '88 924LE (Luddite Edition) manual steering, manual sunroof, manual windows, AC delete, cruise delete, M030 Konis, 25.5 torsions, 931 valance and header panels, 6X16 Fuchs, lowered, etc, etc. |
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08-12-2009, 06:23 AM
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Join Date: Jun 2003
Location: Phoenix, AZ
Posts: 1,327
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just drive it in for the free test.
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87 951, K27/6, Almond Beige, 17" Turbotwist 87 944S, alpine white, 5sp died a violent death 84 944, silver/brown, auto, gone but not forgotten "may the force be with you" |
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08-12-2009, 06:48 AM
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Join Date: May 2009
Location: Virginia
Posts: 132
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I had mine do that it had an open wire to the d+. I ran a light bulb to the coil and the d+. then the alternator started charging.
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09-23-2009, 05:47 PM
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