Question about 1992 GMC Suburban

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I put a diferent altinator on it and now with a fully charged baterey and all hooked up right and now it wont do anything

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What do you mean"anything"? wont start? wont run? wont charge?

Posted on Oct 02, 2009


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I got a 69 chevy c10 the starter wire grounded to the exhaust fixd that then it wuldnt charge so changed the voltage regular then starter & silaniod seems like its holdn a charge but still wo

Hey Steve, if you need a jump to start it then every thing is working except battery holding power try putting battery on a SLOW charge for a day then try again when its running check output of altinator with a fully charged battery it should be 12.5-13.5 volts and rise when you rev motor up ,when you jump it im thinking the battery is very low and the altinator is trying to recharge battery and it cant do that in just a few minutes running time or take it on along ride and watch amp gauge .good luck Steve.

Oct 05, 2014 | Cars & Trucks

1 Answer


What model and make is your truck?
Older vehicles differ widely from later ones. Is the regulator separate from the alternator? If so, you might need to replace the regulator.
On some vehicles, the regulator was booted by the indicator lamp on the dash. If the light does not work (blown), the alternator does not charge.

Sep 27, 2014 | Cars & Trucks

2 Answers

Truck is draining charge and not charging battiers

I just went thru same thing with my 2003 f-350 diesel. I hooked up my horse Trailor and drove to Von's parked went in came back out and truck was dead. I tried to jump it didn't work. Then over next two hours two tow truck Drivers hooked up to both batteries full power charge direct to my truck and would not start.
End story required two new batteries alternator and cilanoid discussed above. In other post. Also contributing to the cause was really badly coroded cables they looked good at the connection point but wher discovered to be coroded inside the tubing just above the end connections so bow it has all been replaced and I have had no trouble since. Hope this helps. Tanya

Jan 23, 2013 | 2003 Ford F350 Super Duty DRW SuperCab

1 Answer

I have a 1991 chevy truck 350 engine 4x4 with air it started back charging the battery so I change the alternator with a new one and now it does not charge now

make sure the old and new one is rated for the same rpm,and amp ratings. also knote if they have the internal regulator, or are externally regulated. where as the altinator may not have been over charging, but the regulator just may not have been doing its job correctly. also some altinators need whats called the (sense) wire hooked up correctly in order to operate.

Jan 28, 2011 | 1991 Chevrolet Crew Cab

1 Answer

Ok i have a 2001 chevy S10 pickup and for awhile now the battery volts drop while im driving if i turn my blinker on the needle gos up and down with every click iv checked the battery altinator and starter...

Make sure the alternater belt is the correct tension....If its been recently replaced, it may have been a size too big. Have you also had the regulator checked for output?
Regards Johngee10

Nov 06, 2010 | 1999 Mercury Sable

2 Answers

Turn ignition key and just get click from soliniod under front hood one white wire and one black wire and dash lights go out,new batt and starter fitted

here are a couple of quick easy thing to do to isolate what the problem is. if your battery is new and fully charged. then take a set of jumper cables and put one clamp on the negitive post of the battery and its corresponding clamp on the alternator bracket on the motor this will insure that you have a complete ground which you need to ingauge the starter. in dc current the amperage is constant and the voltage is variable. a good ground is needed.
if the charge in your battery is depleted jump the car to get it started. then remove the positive cable from the batteries possitive post if the car stays running then the altinator is charging this illiminates the alternator from being the problem. if the car stays running its good if the car dies then the altinator is bad and needs replaced.
check the wires hooked to the starter to make sure that they are not gounding out on the block or the exaust.

Nov 06, 2010 | 1986 Toyota MR2

1 Answer

It wont start and i have already had a new altinator put on a new fuel filter and the battery is fully charged i know its not the starter so what could it be?

You have to get a code reader for your vehicle. Does it turn over? If it does and doesnt start, it could be several things from coil packs or other. Kragen and several auto parts stores have inexpensive code readers for all vehicles. And you will have it for another problem long after you have fixed this one. Hard to say without reading codes from the computer or inspecting it.

Apr 05, 2010 | 1998 Buick Century

1 Answer

My 2002 jeep wrangler check gauges light came onand the battery gauge is below the left dot on the gauge. does that mean i have to replace the battery?

With the jeep running put a volt meter on the battery and it should be reading above 13 volts if not replace the altinator it isn't charging.You can check the fuse for the altinator first if not charging but most likely the altinator is bad.

Jan 31, 2010 | 2002 Jeep Wrangler

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