Question about 1989 Toyota MR2

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Not charging, i replace battery+alternator, fuses look good.

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Please call me about this problem
414-671-6245

Posted on Apr 01, 2014

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6ya6ya
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Posted on Jan 02, 2017

  • 1779 Answers

SOURCE: 1992 Nissan Pathfinder charging problems

How long did the 2nd alt. last before it died? The voltage regulator is, I believe, attached to the alternator. Have u had the voltage regulator checked?

Posted on Jan 04, 2009

  • 9 Answers

SOURCE: 2002 beetle charging problem

check the battery .Battery might not be charging

Posted on Dec 30, 2008

freetek
  • 5568 Answers

SOURCE: 2002 sonata 2.4l battery dash light on. replaced alternator. Still not charging

I don't know if your car has an integrated regulator or not; some house the regulator in a section of the alternator case, others mount it remote from it. The regulator monitors the load and battery voltag,e primitively but effectively, and controls the current flowing through the field winding of the alternator to ground, changing the magnetic field intensity and consequently the voltage output of the alternator. The 'hot' end of the field is internally connected to the + output, the 'cold' end is controlled by a transistor inside the regulator which, in turn, is controlled by circuitry monitoring the system voltage.     Some alternators can be tested by sticking a wire through a specified opening, actually shorting the controlled end of the field to ground briefly, while monitoring the voltage across the battery, doing this though for seconds only. This essentially bypasses a suspected defective regulator; this causes the output voltage to rise instantly to its maximum of ~17 volts if the alternator is OK.
I don't recommend poking a wire at random into an available opening so having a service manual (Haynes-Chilton) would be nearly mandatory.

Posted on Oct 03, 2008

  • 9 Answers

SOURCE: 1988 chevy suburban charging system

First check alt At The Back of Alt Big Red Wire Were hooks to Post (stud) Do you have voltage ?? How Much??
What Voltage do you have at same Place with Engine Running ??
Now At wires Were they plug into Alt ,Top. Wires in White Plastic Clip, Do You Have Powe With Key On ?? How Much Voltage??
Jump across the 2 in the clip (with Engine Running)ONLY TEMPORARY!! Do You Have Voltage at Battery ?? How Much??
If Over 13volts With Clip On (Jumped) You Need A Internal Voltage Regulator ..
Is Batt Light On on Dash ??? Theres A Lot Of Testing You Can Do !!! And I will Need More Infomation to Keep Going ... These are just some Possible Problems No Way In Depth ...
Could Be a Number of things Or May be Just as Simple As a Blown Fuse, Dirty Batt Cables ETC etc etc I Hope It Puts You On The Right track !!!!!!!!!!

Posted on Jan 07, 2009

  • 1129 Answers

SOURCE: 86 Tercel 2wd wagon won't charge it's battery

clean battery terminals ,bring battery to be tested after charging, after reinstalling battery run car and test alternator output it should be a minimum of 13-14volts if it is under 13 replace alternator , use a voltmeter set on 12 volt 10 amp dc to check the wire to check is located on the back of the alternator covered with a rubber grommet of course hold negative wirw on volt meter to ground and touch red wire to big terminal on back of alternator while car is running should have 14 volts or at least 13 volts

Posted on Jun 24, 2009

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2 Answers

2001 Nissan Pathfinder when driving down the road the battery dies so I replace the alternator drive down the road everything is good until the battery drains what could the problem be


Charge wire from the alternator to the battery is bad or not connected properly. Check the 120 amp charge fuse link in the underhood fuse box. Voltage at tne battery should be at least 13.5vdc with engine running.

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Usually the car has an ac alternator with a built in rectifier ,so if u have good hands replacing rectifier will cost u maybe 15$ and new alternator maybe 150$ or more

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First make sure the battery is fully charged. Also make sure the belt on the alternator is not broken/missing. after you charge the battery,start the vehicle and put a voltage meter/multimeter on volts dc and apply the leads to the battery posts,you should see anywhere from 13-14.5 volts from the alternator if it is working. if not,check the fuse or fuses for the alternator. if the fuse is good,replace the alternator,and test the battery.

Jun 15, 2014 | 1997 Chevrolet Cavalier

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1998 isuzu trooper need wiring diagram for charging system with a3.5 li5ter motor


1998 trooper new alternator and still not charging and alternator bench tested good,
Check main 80 amp fuse in engine compartment and also check fuses in inside fuse box, there two in that one. first is engine fuse 15amp and the 10amp gauge fuse,

Here is the wiring diagram for the charging system as you asked for , also check connections, follow battery wire off the back of alternator make sure connections are good , that wire runs to engine fuse box and that is one fuse that i said to check it is 80amp, hope this is helpful good day9_30_2012_10_15_05_pm.gif

Sep 30, 2012 | Cars & Trucks

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2000 olds alero 2.4 engine. charging system is not working. replaced alternator and still wont charge the battery.


Check the owners manual for the car and look at the fuses. Sometimes theres a fuse for the alternator. If everything is good there check and make sure the power wire going to the alternator is good. It should have battery voltage here.

Apr 25, 2011 | 2000 Oldsmobile Alero

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Will not charge battery. Replaced alternator and accidently sparked the large hot wire to ground during re-assembly. Checked all fuses and are good.


Will the battery take a charge, charging it with a battery charger ? Might want to have alternator checked to see if its any good, make sure battery cable connectors are tight, if they arent the battery more than likely wont take a charge.

Feb 25, 2011 | Ford F-250 Cars & Trucks

1 Answer

1999 dodge intrepid w/ 2.7 L engine and 280,000 miles. the dashboard battery light came on. i replaced the positive terminal at the battery due to corrosion. the dash light is still on. had both the...


did you have the alternator tested on the car? the alternator may be good but the wiring to it may have a fault, have some one do a charging test on the car, if it still shows that the it is charging have them do an AC current test it could be that the diode is out in the alternator which would cause the light to come on and also the battery to drain when the engine is off. If it is not charging on the car suspect the plug end on the alternator ( we see them fail alot ). there is also a charge fuse might check it. The charging is controlled by the BCM ( body control module). If no charge and plug and wiring are good , fuse is good , suspect BCM......GOOD LUCK

Dec 01, 2010 | 1999 Dodge Intrepid

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Is there a fuse in car or under hood that would stop the battery charging system fro working in 98 lincoln town car


yes there is a fuse, labeled alt fuse and its under the hood in the relay fusebox, if the car is not charging, then just check for power to the alternator, the small wire not the big one, good luck,

Dec 19, 2009 | 1998 Lincoln Town Car

1 Answer

Alternator not exciting


Hi ' If you changed the battery and alternator,
Check the voltage at the red wire on the alternator. if there a less than 12 volt.
Check the fuse link, that goes in the starter positive bolt.
If the fuse is bad replace and recheck the charging system.
IF charging normal. good.
If not, che the fuse in the fuse box, "" cluster".
If the fuse is blow out, replace. and check again.

OK. I hope this work for you.

Jul 06, 2008 | 2000 Chevrolet Astro

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