Question about Toyota Tundra

1 Answer

Alternator and battery check good but battery not recharging

Truck shuts off while driving with dead battery.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Toyota Master
  • 20,706 Answers

Wow , no year car stated, ouch. nor engine option.
ok (ill assume the battery is good and cable lug clean.)

  • engine rpm at 800 or more all time?
  • alternator belt not slipping or belt missing?
  • the dash charge light off running> (and on, keyon, not running )
  • all wires to alternator good. \
  • all fuse in engine bay box good, the big ones.? 50 amps more more?
  • all dash lamps glow like the they should during self test key on>?
  • headlights work and not dim , running engine?
  • battery cables good, not damaged or corroded lugs at 4 ends.
  • by now you have a handle in it.
if not the alternator gave up the ghost or its ground is bad.

Posted on Feb 19, 2014


6 Suggested Answers

  • 2 Answers

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

a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 206 Answers

SOURCE: good alternator & battery, but battery goes dead just sitting

The regulator could be sticking in the alternator. Unplug the alternator and see if the battery goes dead. I replaced an alternator once and the new regulator was bad.

Posted on Feb 15, 2009

  • 4669 Answers

SOURCE: Battery dosn't charge, alternator/voltage adapter test's good.

Did you test the Alternator on or off the truck? It might be a problem with the control system to the Alternator. The regulator need a battery feed to work, It is usually ran through an alternator fuse.

Posted on Mar 11, 2009

  • 54 Answers

SOURCE: 2004 suburban 1500 battery keeps going dead

Something is obviously putting a drain on the battery, if all the things you had checked are good. If you disconnect the negative terminal on the battery touch it back, it should spark a little, but not alot. If it sparks quite a bit you know something is staying on that shouldn't. Possibly a glove box light, or if your truck has a light under the hood the mercury switch in it may have gone bad causing it to stay on. If it's taking 8 days to go dead you'll be looking for something small. I hope this helps.

Posted on May 10, 2009

  • 1 Answer

SOURCE: 98 Jetta...stopped while driving

During this past winter, I was driving my 98 Jetta GL and it suddenly shut down in the middle of the road. It restarted but would only go a little ways before doing the same thing. I got it checked out and it turns out I had to get new fuses. I knew someone who could put them in it was very cheap to fix.

Posted on May 11, 2009

  • 190 Answers

SOURCE: 1999 bmw 528i replaced battery and alternator

Replace your battery when its being tested there not testing it under a heavy enough load. A battery could have a dead cell in it and still show good on the charger. I've had that problem a few times.

Posted on Jul 07, 2009

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Truck starts with a boost but once cables are off battery indicator drops then truck shuts down unless engine is revved.

Check the alternator and the charging system. You may have a weak or failing alternator. If you have a voltmeter, get the battery reading with the engine off. A charged, good battery should show at least 12.6 volts. If you have to boost it, it must be low on charge. Recharge it or have it tested, a dead cell in the battery would not let it charge up.
Now take a reading on the battery with the engine idling, or idling as low as possible without dying. A good alternator and charging system will make the battery now read at least 13.5 volts. If your reading is lower than this, you probably have a weak alternator.

Mar 24, 2015 | 1994 Chevrolet Suburban

1 Answer

Kia shuts off while driving

If recharging the battery makes it start/go again then its a fault in the charging/battery circuit.
Solution 1. Check alternator. It should read over 14 volts across the battery terminals with engine at tick over. If its below that its the alternator thats faulty
Solution 2. Try a different battery known to be good. any size will do for a couple of days. Batteries sometimes only last 2-3 years. yoyrs could have been on since 2006!!!!!!

Jan 28, 2014 | 2006 Kia Sorento

1 Answer

Stuck starter

check alternator if its fried car will die if its good car runs with dead batteries

Jan 05, 2014 | Cars & Trucks

1 Answer

1993 buick lesabre shut off while driving,battery was dead then bought a new battery drove well for 3 weeks then shut off while driving again had to jumpstart it.

Your alternator is bad. It's not recharging the battery as you are driving. The car is using battery voltage until it is all used up and then the engine dies. Replace the alternator and recharge the battery.

Jan 04, 2011 | 1993 Buick LeSabre

1 Answer

My truck will start with a jump but will shut off. battery checked ok,alternator checked ok.plenty of gas. runs at high idle shutsoff at low idle. whats wrong?

if the battery is ok why do you need to jump anyway? most likely its not ok, the alternator do not provide enough power at idle to supply the engine the amount of power needed to keep it running,below 1200rpm you actually use the battery, in the range of 1400 to 2000rpm the alternator will produce a surplus enough to recharge the battery, but if the battery is old it does not recharge enough to start your truck

Dec 15, 2009 | 1996 Dodge Dakota

2 Answers

1989 Ford F250 7.3L Diesel. Bat light came on then smoked the VR

Thats a guessing game, but first, if the battery light was on, that means no alternator output. So recharge the batteries and be sure they are good, Then replace the alternator. If the batteries and the alt are good, and the battery light is off, then all should be OK.

Nov 15, 2009 | 1992 Ford F250

2 Answers

My engine was running and when i turned on my headlights the entire vehicle died. Now i won't even get dash lights to come on? Is this a fuse that i can't find or a relay that needs to be replaced? 96...

sounds like the alternator went bad. and wasnt charging battery, when headlights demanded power there wasnt enough to supply light and motor , so it shut down, recharge battery check battery connections then have alternater check, good luck. hope this helps.

Oct 31, 2009 | 1996 Chevrolet Blazer

1 Answer

Truck dies but engine keeps running. battery or alternator?

You need an alternator....well unless your belt came off or got very loose. The truck continued to drive because the battery had enough juice left to run the ignition system, but after you shut it off there was no where near enough to turn the engine over or possibly even run the starter. The battery will have to be charged and a new alternator installed.
Hope this helps.

Apr 01, 2009 | 2003 Toyota Tacoma

2 Answers

Battery Dead soon after service engine ligt came on

it sounds like you have a poor battery and a draw on your truck put a low amp clamp around the positive battery cable with the truck off and key removed from the truck for 10mins. then if you show more than 350mamps you have an excessive draw to find what is drawing the battery down start removing fuses starting with larger fuses until the amp clamp reads below 350mamps. then you know what circuit is causing the problem. check that the under hood light is turning off. common problem. good luck.

Mar 24, 2009 | 2001 GMC Sonoma Extended Cab

4 Answers

Battery Not charging

I believe I can help you. There are a few things to check.

First, are you running the plow a lot when you're having these problems? If so, you MAY need to install a second battery designated for just using the plow with it's own alternator. Hydraulic pumps use a lot of electricity to run.

Second, there may be a short in your electrical system, try installing a battery disconnect and disconnect the battery every time you shut the truck off for extended periods of time (more than a day).

Finally, check the voltage regulator (or have a shop look at it). If it is not working properly, the batteries may not re-charge correctly. The cheapest way to solve the problem is with a battery disconnect, but it may get annoying after a while, especially if you forget to disconnect it and your battery goes dead. Finding a short in an electrical system is a long and tedious process that may not always solve the problem. And installing a second battery and alternator for the plow can get expensive.

I hope I could help you with your problem and good luck.

Jan 05, 2009 | 1992 Chevrolet Camaro

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

Related Topics:

150 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts


Level 3 Expert

76051 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8265 Answers

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

Answer questions

Manuals & User Guides