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How can you tell if altenator is bad or just a loose connection

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Check the connections or go to auto shop and they will test them for free like autozone or rileys

Posted on Sep 12, 2010

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2 Answers

My battery light lit up on dash of my 2008. Mitsh. lancer gls cvt....what does that mean?


Altenator is not charging the system. It could be the altenator, regulator (built into the altenator), A loose wire (bad connection). There is a plug on the altenator that signals this light when a problem occurs. start the car and wiggle it or unplug it and plug it back in, this will tell you if you have a bad connection. To check the altenator you need a voltage tester.

Jun 10, 2011 | 2006 Mitsubishi Galant

2 Answers

Just got new battery but the batt. light is on.I also got the alternator tested and it was good


Check all connections and especially the ground connections...there should be two ground locations one at the engine block and one at the body

Jan 23, 2011 | 2001 Chevrolet Venture

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Battery light flashes. Ran a battery test and it came up with No Charging Voltage. Diode Ripple Load on 12.07 Load off 0.0


I would say check altenator for proper voltage and pigtail on altenator for loose bad connection

Jan 05, 2011 | 2002 Chevrolet Blazer

1 Answer

1987 corvette not charging put in new battery,new altenator,soon as battery looses its charge car dies,changed altenators three times


So you are buying junk parts, or you really dont have a Alternaor problem? Have the charging system checked out by a Qualified Reapair Shop NOT the guy at the parts store selling you these wonderful parts. They will want to verfiy that the Alternaotor and Battery are indeed good/bad and check all connections, terminals, and ground points. If these are all good , then they need to find out what is going on.

Sep 02, 2010 | Chevrolet Corvette Cars & Trucks

1 Answer

I have headlights but no power inside or to start


Lights will work with a weak battery. Try jumping the truck with another vehicle first. If it starts watch your volt meter and see if it charges up. If you have a indicator light instead watch that. If it flickers the diode is bad in the altenator. If the gauge is present and not charging the altentor is bad. Chack all wiring to the battery and the altenator for loose or corroded connections first. It maybe an easy fix

Jan 08, 2010 | 1990 Chevrolet K1500

1 Answer

My question is- my 2001 Mitsubishi Galant has the anti-theft system. The battery went down because it hasn't been driven in a couple of weeks. I can boost it off & drive it for just a mile or so &...


Usually if it is the anti theft system it should not start with a boost, I would suggest first check the basics have the altenator tested with a voltmeter the volts should read 13.5 to 14.5 if not you probbably have a bad altenator, loose belt, or bad or loose battery connections. Since the battery went completly dead I would suggest having it recharged and tested.

Jul 15, 2009 | Mitsubishi Galant Cars & Trucks

2 Answers

It just turned off and now wont start It clicks when you try to start it and trys to turnover. HELP!!


Can be bad solenoid on the starter, bad battery or altenator. First thing I would do is check all the cable connections to make sure they are extremely tight and perfect contact. The slightest looseness or space will cause this. Battery, Altenator, and Starter can be tested for free at most part stores.

May 22, 2009 | 2005 Volkswagen Passat

1 Answer

Voltmeter drops to 9 volts on Chev 454 P30 motorhome


this is eithere a loose positive cable from the altenator to the battery or the regulator in the altenator is about to fail. if you have not had any problems starting the vehicle then most likely its a loose connection between the gauge and the charginging circuit or the gauge is faulty. take a multimeter and test the charging votage at the altenator while the vehicle is running it should measure 13.5 volts and should not change more than .5 volts. if the voltage drops more than 1 volt the regulater is bad and the altenator needs to be replaced. if it is working fine then looke for a bad connection make sure all positive and ground cables are tight. if they are replace amp gauge

Apr 19, 2009 | 1994 Chevrolet C/K 3500

1 Answer

84 ford not charging


The only thing that comes to mind is electrical connections--battery cable connections (obvious, but worth mentioning) and all wiring to alt. and regulator, nothing loose, corroded? I'd also check the battery by swapping in something else that may fit, or having it tested. Yes, it's new, but I have seen (although rarely) a bad battery that was right off the shelf, wouldn't take a charge.

Nov 26, 2008 | 1984 Ford F 150

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