Question about 1996 Ford Ranger SuperCab

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1996 Ranger alternator tests prove it to be OK. Truck starts and runs; alternator puts out what appears to be excessive power (14.2 amps) to a nearly -fully-charged battery. The alternator charge warning light STAYS LIT ! 15 amp fuse in the PDB blows. Tried up to a 25 amp fuse, and it blows too.

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I would replace the alternator. The test might of proved it was ok but that just checks to make sure its putting out the amperage its rated at. Sounds like its shorted internally and putting out full amps all the time.

Posted on Apr 10, 2011

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Wasn't charging. changed battery and alternator. by the gauge it shows 14 volts but with the truck running and i unhook the battery it dies.


Not on new vehicles , you never ever pull a battery cable while it is running ! A voltage spike can take out electronic components ! That was 60's an maybe a few 70's vehicles ! That change when they started using transistors in voltage regulators an in engine modules. If it is show 14 volts it's charging ! I will send a link on how you test the charging system. How To Check Charging System EricTheCarGuy

Feb 20, 2015 | 1996 GMC Sierra

1 Answer

Im having a problem not getting enough voltage running through the truck put a brand new alternator on and when my truck attles my headlights go dim nd it shuts off


Have a load test done on the battery to check for cell failure as the alternator may be putting all the current into a shorting battery. Check the output of the alternator as the regulator may be faulty. Alternators produce 14.5 volts at 2000 rpm and the current is set according to requirement. That is with 14.5 volts and full current draw the alternator is capable of producing the rated amps ( up to 120 amps) If you have extra power requirements ( driving lights --massive amplifier) the total current draw may be more than the rated amp of the alternator and so the battery will eventually run down and there will be insufficient power to run the ECM and it will stop.

Nov 11, 2014 | 1984 Ford Ranger

1 Answer

Battery light stays on. Guage cluster amp meter reads normal charging 13-14 amps. Truck starts normal.


If charging light is on, it means some thing in the charging system is going bad. use a test light!-- battery voltage at battery when truck is off should be at least 12.6 or better, if alternator was charging good. if less than 12.4 and it is charging ok. battery is going bad. when engine is running, at the battery there should be at least 13.8 to 14.2 volts or better.if alternator is ok, all checks are done at the battery posts to determine voltage. Hope this helps you out! if less than 13.8 or lower while running. alt, is bad.

Jul 15, 2014 | 1989 Ford F 250

1 Answer

I have a 1999 gmc sierra 1500 my amp gauge is going from 16 to 9 then I start loosing all power to my interior and no head lights or anything engine still runs fine can happen for a few miles then eve


You may need a shop manual to get the wiring diagrams and test procedures.
The alternator output should be around 14 volts unless you have a heavy load such as headlights or the heater blower on high.
If voltage goes above 14 the regulator could be faulty even tho you say the alternator checked out ok on a bench test.
The regulator gets a power signal from the gauge on the dash to energize it. There could be a loose connection somewhere in the charging system, or something in the instrument cluster. Even the key switch could be a factor.

Jan 16, 2013 | 1999 GMC Sierra

1 Answer

Short in wire from battery to starter or cylenoid? sometimes it will turn over other times not


I had my ford 91 ranger checked and both were good, plus alternator was in the green? But kept killing batteries and would not start without a jump. I replaced solenoid, starter, and battery. Finally removed the alternator and the BRUSHES were making contact just enough to keep my truck running, but when lights or any other accessory was used the truck would quit. New alternator and starts every time and can run all accessories without problem. Check the brushes on the alternator.

Nov 12, 2011 | 1996 Ford Aspire

1 Answer

1996 chevy s10 pickup brand new motor new everything but wont start thought it was a timing problem..fixed it wondering what it could be? Maybe something with the distributor but not sure where to find a...


Battery light indicates alternator failure. If you have a voltmeter, check voltage at battery with engine running. Should be at least 14 volts. If no voltmeter, remove alternator and take it to parts store for testing.
If the alternator is bad and that is your only problem, the truck should jump start, but it will not go far unless the battery is charged. OK?

Oct 01, 2010 | 1996 Chevrolet S-10 Pickup

2 Answers

I had a problem with my starter solenoid my truck was not starting. i have a 1996 ford ranger i bought a new one the truck started a few times and then it stopped. what is my problem.


You should have your battery tested & make sure that the terminals are cleaned & well protected wth grease once charged fully. Since you crossed/jumped the solenoid & didn't get it to start until jumping the battery (providing extra voltage), that rules out the solenoid and the ignition switch. Sometimes a battery will test full without a load but will not provide the voltage to the solenoid to actually complete the circuit, thus the clicking sound. If the battery is strong, and the starter bad, the solenoid will click solidly once, passing full voltage to the starter that will either turn,hum, or do nothing. good luck

Jan 29, 2010 | 1996 Ford Ranger SuperCab

3 Answers

Thismorning lights and blower flashed battery light came on voltage dropped to low. batt.light still on truck is starting and running fine.i put a voltage meter on batt.---reads 12.9--11.0. top bolt on...


Sounds like you may need an alternator.
If the batt is ok, could be the alt going out.
A local pep boys or equivalent can check free or inexpensively...
The voltage regulator is built in to the alternator... so if you change the alternator, you change the regulator too.
k

Sep 18, 2009 | 1996 Ford Explorer

2 Answers

My 1995 gmc truck has a weak starting crank


could be the wrong battery check the craniking amps to see if u got the right battery sometimes these auto parts stores give the wrong item also make sure your cables are clean when clean pour some coca cola on them so they dont corode

Sep 08, 2009 | 1995 GMC Sierra C1500

2 Answers

1991 ford ranger battery light


bad battery module for the light or a dieing cell in battery

batterys can be tested and wont show a dead cell at all but you will be told that the battery good
most batterys are refurbished batterys sometimes getting the luck of a good battery is 50/50 chance

heres a way to test the battery and alternator at the same time
start vehicle
disconnect battery positive post
if vehicle dies the alternator is at fault if vehicle doesnt die its the batterys life dead cell

Jun 11, 2008 | 1991 Ford Ranger Supercab

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