Question about 1992 Chevrolet Corvette

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1987 OUT PUT OF ALTIMERTER

PUT NEW BATTERY IN AND VOLTS ARE READING 17.6 WHAT IS NORMAL READING AND HIS BATTERY FRIED UP YESTERDAY. WHAT COULD BE REASON?

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Running should be at 14v. the voltage regularator may be bad in your alternator it should never get over 14.6v

Posted on Oct 04, 2008

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Overcharging. New alternator and battery. Charging 17 to 18 volts and frying battery. 2000 Camry 2.2l


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Overchanging alternater (ECU?)


The ECU has no control on the voltage. Does your vehicle have a separate voltage regulator? If so that's your fault. A lot of alternators have the regulator built into them. The alternator needs to be put on a test rig away from the vehicle and the output tested, this will eliminate the vehicle, You could disconnect the wiring to the alternator, run three fly leads to the alternator and to a separate battery and run the engine and test the voltage on the spare battery. Wire 1: Battery neg to case of alternator Wire 2: Battery pos to + terminal on alt (the thick wire) Wire 3: Battery pos through a 5 watt bulb to the ind terminal (ignition light) 17 volt will blow another battery for sure.

Jan 07, 2014 | 2002 Hyundai Elantra GLS

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My voltmeter reads out 16/17 on my 94' Buick Park Ave. will this kill the battery?


Yes. Some voltmeters read higher volts when the voltmeter battery is low. Use a different voltmeter or put a fresh battery in the volt meter or test voltmeter against a known dc voltage to see if the reading is accurate. After this start thinking it is the alternator regulator.

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Every time i try to start my new engine i fry the ground wire on my alternater


Check all of the ground wires bad grounds will do this if you have a multi meter put it on 20 volts DC Disconnect the negitive terminal from the battery take the red lead from the meter and put it on the red terminal of the battery and the black lead from the meterand put it on the engine if you read any voltage you have a short in the system so a hot wire is touching a ground

Nov 05, 2010 | Ford Granada Cars & Trucks

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Replaced starter and ignition switch and at times the car will not start unless i jump starter and when it acts up it doesnt click and does nothing but everything is energized. also after jumping starter...


Please check the condition of your battery and charging system. Hydro the battery ... it should read at least 1200. Your alternator should be putting out at least 13 volts.

Thank you for your interest in FixYa.com

Oct 03, 2010 | 1987 Chevrolet Camaro

1 Answer

ALTANATER NOT CHARGING BATTERY


you will need to test this to be sure if its not charging then take it out and have it tested for free at autozone and get the replacement parts there also.
have the new one tested as well.
put a 12 volt test meter on the battery with the engine off.
take reading
then check reading with engine running .
take new reading.
if there the same the alt is bad.
volt should be be low 12 volts when off and should be above 12 volts when on.

keep me posted.
jm

Jul 29, 2009 | 1987 Acura Legend

1 Answer

Car was running fine all day yesterday. Went to


check your battery cable connections. Remove cables from post, clean with post cleaner, $3 at Kmart, Sears, auto store.
If that is not it, have auto store test battery (for free) after you charge battery. You could have a shorted cell in the battery.
Check to see if battery is being charged by alternator this way:

  • Test battery voltage with volt meter. It should read about 12 1/2 volts. (Engine off).
  • Test battery with engine running. It should read about 14 volts if the alternator is putting out.
Hopefully it's just dirty battery connections.

If this solves your problem, please rate as fixya. And, good luck. Report back results.

Mar 05, 2009 | 2001 Buick LeSabre

1 Answer

24 volt charging problems .2 12 volt batteries 1 battery 16volts and the other about 9-10 volts


A 12 volt battery is actually 13.2 volts fully charged. If you are reading 16 volts, you are probably getting extranious voltage from the system somewhere, especially if the vehicle is running when you check the voltage. The alternator will put out about 15-18 volts to charge the battery normally, and yours may put out 28-32 volts to charge them in series, but the batteries, when disconnected, should never read more than about 13.2 volts each. Typically, it will read about 12 1/2 volts when disconnected. COMPLETELY DISCONNECT BOTH OF THE BATTERIES. If you still read 16 volts when it is disconnected, you must have a bad meter because the battery can't produce that much voltage, no matter what. (Six 2.2 volt cells connected in series inside the case.) Put the meter on a known good battery on another car that is not running and see if you get the same reading. It sounds like the other battery is almost dead, regardless, and it sounds like your series/parallel switch may be malfunctioning. (That is the switch that puts the battery in series to run the 24 volt starter, then puts the batteries in parallel to run the remainder of the vehicle on 12 volts. This is all assuming that you have a diesel vehicle with a 24 volt starter and that is why you have two batteries.

Aug 19, 2008 | Toyota Land Cruiser Cars & Trucks

1 Answer

Battery, battery, battery!


you do have a short in the electrical system, test this by putting a freshly charged battery and connect the negative to the battery then try to just scratch the positive wire to the battery and watch if there is a big spark that would be produced. if there is then you have a short that is draining your battery. if there is a small one . that could just be your clock or radio. if you have an ammeter ( a tool to measure current) you can take the current that the car is drawing as you put the positive wire to the battery.

another test is start the car. get a volt meter that would measure dc voltage in the range of 20 volts. then measure your battery voltage. it should read at least 13.8 volts dc. turn on your head light, it should still read at least 13 volts dc. then lastly, tun on your ac if you ahve one. it should still read above 12 v. at least 12.5 v. that means your alternator is charging.

all of the test and readng are on idling state.

then rev the car to 2000 rpm if you have an rpm meter and all of the voltage should increase a little bit but not exceed 15 volts.

if it does exceed 15 volts then you have a bad regulator that fries batteries.

i hope i was able to correct your problem.

Jul 04, 2008 | 1991 Mercury Grand Marquis

1 Answer

12 volt supply problem 1987 chevrolet r30


i ran into EXACTLY the same problem on an 86. i kept forkin' around and finally went direct to the starter and bingo it started. to this day it is still working and never happened again. i have absolutely no idea why. by the way--that was almost 2 years ago. might also be corrosion between the battery cable @ the starter, and the wires that go to the waring harness.

May 15, 2008 | 1987 Chevrolet R30

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