Doober Posted January 21, 2008 Report Posted January 21, 2008 Hello! Car: 1991 Buick Regal Limited 3,1 My alternator doesn't charge battery. Alternator is new, battery is new too. Connection alternator to battery is OK. I suppose that there is a problem with alternator's 4-wire connector. Something is missed on it. Could somebody help me with alternator wiring diagram? PS. On the autozone's repair guidelines, alternator has additional bracket on the back. Could it be ground connection? Or it's just auxiliary mount? Quote
slick Posted January 21, 2008 Report Posted January 21, 2008 The ground is through the battery, to the mount, and through the engine. Power is ran down to the starter, and then back up to the battery. The 4 pin plug is kind of the regulator, and the on-off switch. The ECM sends the signal for the clutch to engage or disengage. As far as the colors are concerned in that plug, no clue at all. Quote
Doober Posted January 21, 2008 Author Report Posted January 21, 2008 I mean if the rear auxillary support rod serves as a ground connection of the alternator? I have this support lost, Could it be possible cause of alternator malfunctioning? If somebody knows were i can get alternator's wiring diagram? Quote
slick Posted January 24, 2008 Report Posted January 24, 2008 Not sure if this is correct or not, but worth a shot. Be sure to verify with a multimeter. Quote
slick Posted January 24, 2008 Report Posted January 24, 2008 BTW, this was for a Series 2 3800. The plug should be the same, and the on/off switches should be the same. But, hopefully someone, who has access to factory service manuals, can get a scan of it. Quote
19Cutlass94 Posted January 24, 2008 Report Posted January 24, 2008 I have my manual for my 1994 here, but I dont think they are the same. Quote
slick Posted January 24, 2008 Report Posted January 24, 2008 I have my manual for my 1994 here, but I dont think they are the same. If you can get the correct one posted up, I will remove my post. Quote
19Cutlass94 Posted January 24, 2008 Report Posted January 24, 2008 all my book is telling me 1204795 4-way F metri-pack 150 series BLK Thats it. Its not giving me a diagram like that. HOWEVER A-B-C-D is wired the same in the connector. I duno how much that means though Quote
Doober Posted January 24, 2008 Author Report Posted January 24, 2008 Not sure if this is correct or not, but worth a shot. Be sure to verify with a multimeter. Sorry for my bad english, but as i able to understand, B- charge control lamp C- to voltmeter gauge right? Quote
rockfangd Posted January 25, 2008 Report Posted January 25, 2008 could be a long shot but how is the belt tension and is the belt installed properly? Quote
Doober Posted January 26, 2008 Author Report Posted January 26, 2008 Not sure if this is correct or not, but worth a shot. Be sure to verify with a multimeter. I checked wiring on the car. Pins "B" and "c" are connected by brown wires. One pin supplies 12V(battery voltage, checked with ignition ON), another one supplies 4V. If someone have already faced with similar problem, please, i would be very grateful for advices. Quote
Doober Posted January 27, 2008 Author Report Posted January 27, 2008 Thanks to everybody. Problem successfully solved Quote
slick Posted January 27, 2008 Report Posted January 27, 2008 Was the diagram that I posted correct? Quote
IRONDOG442 Posted January 28, 2008 Report Posted January 28, 2008 Where have you been lving ina cave, today you are captian obvious, not me. Quote
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