Question about 1988 Toyota Land Cruiser

2 Answers

My 2001 expedition is reading 19 volts at the battery while idiling,i just had the altenator rebuilt.All the instrumentation goes out or drop to zeros and the battery light comes on while driving.when this happens the voltmeter shoots all the way to the top

Posted by on

Ad

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 300 Answers

With a digital multimeter, while the engine idling, check the voltage between (+) and (-) terminals of the battery. If the reading is 13.8V to 14.2Volts, then the charging system is O.K.
If you get 19Volts, I do not doubt it, you have serious problem with charging system, alternator-voltage regulator. Please do not operate the engine. The OVER VOLTAGE can cause severe damage to the electric and electronic system in your car. If you didn't do it. Send the car, in a car repair shop ASP get an estimate and Sue those who made the first repair. Otherwise repair the car ASAP.

Posted on Nov 06, 2010

  • jim rhodes Oct 01, 2012

    OK I have a similar issue with a GMS Yukon. I noiticed volt meter in the dash reads 19v idle, driving, and even with the acc switch on. Checked with ta volt meter 12.8 on battery running idle 14.5. still 19v on the dash. Any ideas.

×

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 528 Answers

I suspect you have a faulty voltage regulator. If your rebuilder has a warranty or guarantee then I would check with him - but first find out if the regulator is in the alternator as I suspect or in the computer. If it's in the alternator then it went bad or was bad when installed - if it was even changed, as he may have just replaced the brushed inside the alternator.If the regulator is in the computer then you may need a new computer - let's hope not, right?
Good luck!

Posted on Nov 06, 2010

  • Bayyagg
    Bayyagg Nov 06, 2010

    You really got an ALTERNATOR problem!
    Replace the IC REGULATOR/DiODE in the alternator will surely solve that problem!

    Hope ur computer still works properly w/ that high voltage it got from ur ALTERNATOR, otherwise SUE those guys that repaired/sold it to you w/o testing it properly!

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

I HAVE A 1994 BUICK REGAL,WHEN I START THE VEHICLE THE AMP GAUGE STAYS AT ABOUT 6 VOLTS,AND THEN I TURN ON THE PARKING LIGHTS AND IT GOES TO NORMAL ABOUT 14,I TURN OFF THE PARKING LIGHTS AND IT STAYS ON...


replace the voltage regulator
amp gauges read amps or current flow
volte gauges read volts so if the volt gauge reads 6 with the engine running indicates that the regulator is not coming into service until the battery voltage drops and that triggers the regulator
an accredited auto electrician will be able to test the complete charging system and advise on the fault

Nov 20, 2017 | Cars & Trucks

1 Answer

My 1991 dodge ramcharger will not charge. I have had it to the repair shop twice and they keep saying its the alternator. They said they tested the complete charging system and found nothing wrong with...


compare the voltage at the back of the alternator (large post) to the voltage at the battery, when sitting while engine off and running-the readings should be identical. If not, you have a wiring problem or if that is ruled out, the ECM is the issue. You should get readings of 12.5+ volts after sitting overnight, and close to 15 volts when first started, gradually dropping down to about 14.2 volts, at BOTH locations.

Apr 19, 2011 | 1991 Dodge Ramcharger

2 Answers

Battery light come on tgen goes off


Loose Battery Connections, Alternator Connections. Check for looseness and corrosion, if corrision exists clean off and tighten cables. Possible Intermittent Alternator failure.

Sep 06, 2010 | 2003 Ford Expedition

1 Answer

Elec shorttruck


Have a volt meter? If so start the engine if you can get it charged uo and set the volt meter to 200
Them make sure the volt meter is set to the AC mode. I know it supposed to be set to the DC mode although we are doing a test, correct? Now with the meter set to the DC mode and the engine running, take the positive probe which is the RED one and place that on the NEGATIVE post of the battery. Now put the BLACK Probe one the POSITIVE side of the battery. If a reading of voltage shows of any sort the diode in the altenator is at fault. That problem causes the system not to charge the battery. Generally a diode will got out upon jumping another vehicle. You stated you bought an altenator new. If so new ones cost hundreds of dollars. If a lot lees you had purchased a rebuilt. Rebuilder do screw up so you may have a bad on here so running this test may find your problem very easy. If the voltage reading reads OL the altenator diode is good.

Jun 12, 2010 | 1995 GMC Jimmy

3 Answers

Charging system light


Have the alternator checked,it should read at the battery 13.65 volts to 14.25 volts,with the ac on high blower,and the headlights on.If it does not read this range,replace it,have the battery checked,make sure it is good,have it load checked.Also tighten the alternator belt,or replace the tensioner if needed,and the belt.

Apr 09, 2010 | 2001 Audi A4

2 Answers

The battery light stays on, what does that mean?


have the very same problem. It means a couple possiblilites. It could be that the alternator, alternator diode or wiring is going out. If may also mean the battery is getting bad.

Check your battery terminal connections for good solid clean contact, and solid connections on your alternator and see if you can tell how old the battery is.
Most likely an alternator replacement will solve this issue... That's what I'm doing on mine today.

Apr 07, 2010 | 2000 Ford Expedition

1 Answer

My battery keeps going dead. I have had everything checked and no one can find the problem. someone suggested it might be the abs. I don't know what to do next.


Did someone run a volt meter on the battery while the engine is running? To see if the altenator is good you must connect the voltmeters positive probe to the negative terminal of the battery and the negative probe of the volt meter to the positive terminal of the bvattery. Set the volt meter to the DC mode and see if you get a reading. If so the altenator has a bad diode keepthe battery to reeceive a charge. The diode keep the current running one direction you see. If you connect the probes the way the should be , red on red and blac k on black you will receive the same reading. When reversed you should get a zero reading with a good working altenator

Mar 14, 2010 | 2001 Chevrolet Tahoe

Not finding what you are looking for?
Cars & Trucks Logo

300 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

Marvin
Marvin

Level 3 Expert

83593 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22393 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8841 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...