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I have a 1994 4Runner I was putting an alternator in it and the hot leg coming off the alt arched off the alt and now the check engine light will not come on it will not start I've checked the fuses

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  • Cars & Trucks Master
  • 9,587 Answers

The wire from the alternator may be a fuse link or connect to one. Fuse links protect the wiring harness from going up in smoke when there is a high current short. Get a manual from an auto parts store to find the locations of the fuse links.

Posted on May 16, 2017

6 Suggested Answers

6ya6ya
  • 2 Answers

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

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Posted on Jan 02, 2017

SOURCE: battary light on , engine cut off car won't crank

sounds like it's your alternator, your alternator charges your battery and runs car once it is started. if you have a bad alternator your battery light will come on, and shortly after your vehicle will die, unable to restart without a jump. I would take your battery to autozone or an auto shop to have your battery and alternator tested.

Posted on Jan 28, 2009

rockitman187
  • 2559 Answers

SOURCE: alt gauge comes and goes but alternator is fine.

Check the body ground module

Posted on Feb 03, 2009

freetek
  • 5568 Answers

SOURCE: 2003 Jetta TDI alternator light came on in dash

Your voltage regulator supplies the path for the control lead of the alternator and varies the amount of current available to provide the magnetic field of the armature with the required strength. Measuring from this lead to ground won't show much voltage.
Apparently the regulator is not integrated into the alternator and is probably failed. If you can chase the control lead backward, you will find the regulator and these are mostly mounted on the fender well or firewall.

Posted on Jun 27, 2009

  • 1201 Answers

SOURCE: check engine light has come on

You need a code scanner hooked up to it to find out why the light is on.
If there is an advanced auto or an autozone near you, go there and tell them the engine light is on, and you need a code retrieved. They don't charge for this, where other places do. Tales about a minute.

Posted on Jul 30, 2009

  • 1 Answer

SOURCE: WHEN STARTING, CHECK ENG LIGHT,COOLING FANS COME

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Posted on Nov 16, 2009

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Put a new alternator and battery on the truck but still does not charge


Hi George,
I need year--make--model--engine size.
Usually the alternator needs excite voltage or no charge. The alternator bat terminal should be hot all the time, even with key off, if it isn't, something wrong with that wire circuit.

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My 2005 ford explorer xlt check charging system light keeps coming on. I just recently within 60 days ago replaced the alt AND the battery. Thought that solved the problem then about 2 weeks later it came...


You need to check the out put of the alternator. In general the alternator should put out 13.5 to 14.5 volts. I would say go to where you bought the alternator and have them check the voltage. If check engine light is on you should have a code get them to check the code. Most auto part stores where I live will check your code for free.

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I have a 1991 dodge ram b250 replaced battery alternator check fuses checked wires an still no juice from alt can my ecm be bad


if your not getting juice from your alternator then it is bad the ecm doesnt supply the alt with juice the alt produces its own so if its not producing the correct voltage it will need replaced. it should make 14.75 volts in order to keep your battery fully charged ang to keep up with all running accesories. it should put out no less than 13 volts

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well if the battery light came on that means your alternator is not charging the battery,,you need a new alternator,,,and maybe a new battery if it killed it,,,,that set the check engine light on,,,,,for it not charging,,,,,do not buy a aftermarket alt,,,,only saturn/gm,,as they do not meet gm/saturn specs and you will install it and still have a battery light on,,,,,,you need a factory alternator,,,yes it costs more,but unless you feel like putting a few in and out to find this out,,,,,

Apr 09, 2010 | 1997 Saturn SL

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Washer bottle motor


First, check actual battery voltage (should be 12v or better with engine off. Then check that all connections are clean and properly secured at both ends of the battery cables. If battery is a bit old, have it load tested. Once you get past that, put a volt meter across the battery terminals and crank engine (or try). If voltage drops below 9.5v change the starter. Once you get started, finish by checking alt output...should be between 12.9 and no higher than 14 at idle, should hold around 13v or better with no drop off with all lights, heater radio etc on. Maske sure alt drive belt is in good condition.

May 10, 2009 | 1998 Plymouth Grand Voyager

4 Answers

Put a new alternator in 2000 Jeep Grand Cherokee engine light on


well , the ECU runs the alternator. (DG wire "dark green")
the alternator field is controlled 100% by PCM reg , inside PCM.
so..... if the running engine has 13.3, to 15vdc the alt is working
if lower, its not. (rpm on engine 800 or more)

not scanning the PCM a the CEL glow, you missed the boat.
why not scan it. see why the PCM is upset (DTC errors stored)

see the 2 lower pins below , those go to PCM.
in theory if the field in the old BAD ALT, was shorted.
that could in fact, burn up the PCM regulator.
shorting outputs of PCM , does that in most cases.
im the poor sod that fixes PCM's.so....

1946421-gyllgess1dmtl30sgxtyvqv2-3-0.jpg

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Isuzu alternator


You probably have this sorted by now as this post is a couple of weeks old but just in case you haven't, here goes.
Remove the front belt/s. Remove radiator cowl. Access the alternator bolts by removing right front wheel. Once diconnected, push the alt up past the radiator and into the hands of your assistant.
This method is for the 3.1td engine. If you have a V6 I have been told that the alt will come out through the wheel arch which will avoid removing the belts and cowl.
Also, don't forget to disconnect your battery/s.
Good luck.
Gary.

Oct 20, 2008 | 1996 Isuzu Trooper

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