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2002 Hyundai Accent won't start


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fun value
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Nov 25, 2012, 10:25 AM

Post #1 of 13 (2855 views)
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2002 Hyundai Accent won't start Sign In

It is a 2002 Hyundai Accent, 1.5 or 1.6 L engine. Doesn't start, doesn't even turn over. When I jump from Pontiac (with Pontiac engine off) it either clicks and doesn't start or sometimes it turns over really well and starts right up. I cleaned the battery posts and cables. When I take the Hyundai battery to Walmarts and to Autozone they say the battery is good. After starting with the Pontiac I let it idle for about 1.5 hours. At first I noticed the charge indicator on the dashboard showed no charging. Later I noticed it was charging (needle at about 1/3). Aft.about 1.5 hours I turned it off and immediately tried to restart. It didn't start, didn't even turn over, didn't even click, click, click.
So now what? And also, what should I expect the dealer to charge. They do a $85 diagnostic and if I chose to have them repair it, they refund the $85. Any suggestions on other places. Pepboys is 100 miles away.
Thanks.


Discretesignals
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Nov 25, 2012, 10:41 AM

Post #2 of 13 (2850 views)
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Might want to have the battery tested again. Make sure your battery terminals are clean and tight. No corrosion. When you get it running, check the charging system voltage with a volt meter at the battery terminals. When it is charging it should be around 13.5 volts. Also make sure your belts are in good condition and properly tensioned.





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fun value
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Nov 25, 2012, 2:15 PM

Post #3 of 13 (2801 views)
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After jumping and starting, the voltage is about 12.77 volts.
I want to try disconnecting the battery while running to see if the alternator keeps it running, but one website said the battery could blow up. Why would it blow if disconnected? Anyway, what do you think. I will wear goggles, even my motorcycle helmet.
What do you think about the alternator? The alternator indicator indicates it is charging.


Discretesignals
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Nov 25, 2012, 2:48 PM

Post #4 of 13 (2796 views)
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The alternator isn't charging. You may need to have the alternator tested. There also could be a problem outside the alternator, such as wiring or connectors problems. On the back of the alternator is a large stud where the battery cable connects to. Check voltage at the stud also. Some alternator circuits have fuses, so be sure those fuses are intact.

The battery won't blow up if you disconnect it while the engine is running, but if the alternator is functioning and you disconnect the battery while the engine is running, you'll stand the chance of frying solid state components such as an engine computer. The reason is because the alternator is sensing battery voltage. When you disconnect the battery, the alternator's regulator senses the extreme drop in voltage, so the regulator full fields the alternator. This generates a very large voltage spike into the electrical system. The spike (surge) is what can take out solid state components. The battery acts as buffer against these spikes, but since the battery is disconnected the buffer is non existent. Some modules have protection, but there is no guaranty damage can't be inflicted.

The best tool that you have to check to see if the charging system is operational is the volt meter. 12.77 volts is near battery voltage and isn't enough. Charging system voltage should be in the vicinity of 13.5-14 volts.





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(This post was edited by Discretesignals on Nov 25, 2012, 3:01 PM)


fun value
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Nov 25, 2012, 4:09 PM

Post #5 of 13 (2783 views)
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I recleaned the terminals and posts with stuff from the autoparts store. I think I cleaned it better, because it started without jumping. I put on gloves, motorcycle helmet and removed the positive terminal. It kept running. But I replaced the terminals and tested with the voltmeter. It read out 14.42 volts. So now I wonder if the alternator is over-charging.


Discretesignals
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Nov 25, 2012, 4:23 PM

Post #6 of 13 (2781 views)
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I guess you didn't read what I typed or maybe you didn't understand what I typed.

Maybe I should use pictures. Disconnecting the battery while the engine is running can cook circuit boards or those small tiny electrical components that are on the circuit boards. Those circuit boards are inside the computers that controls the functions of the engine and the transmission and other electrical items throughout the vehicle.

In the picture below are tiny little solid state components. They are designed to operate on low voltages. When you induce a higher than normal voltage into one or more of the components they tend to cook. This higher than normal voltage occurs when disconnecting the battery from a working charging system. Those components are repairable up to a point, but very very expensive and time consuming to diagnose and repair. I guess you are willing to take your chances of seeing if a module has overload protection and if it is functioning properly. Not something I would gamble with.








Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Nov 25, 2012, 4:29 PM)


Sidom
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Nov 25, 2012, 6:36 PM

Post #7 of 13 (2762 views)
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In Reply To
I put on gloves, motorcycle helmet and removed the positive terminal. It kept running.


Shocked Shocked Angelic I guess there are some people out there that really have no business working or cars, before they hurt themselves or the car






__________________________________________________________________________________________



Discretesignals
Veteran / Moderator


Nov 25, 2012, 6:59 PM

Post #8 of 13 (2756 views)
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Ya, the gloves and helmet idea should of tipped me off. Crazy





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


Hammer Time
Ultimate Carjunky / Moderator


Nov 25, 2012, 7:13 PM

Post #9 of 13 (2752 views)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



fun value
New User

Nov 26, 2012, 11:20 PM

Post #10 of 13 (2712 views)
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Hi discretesignals:
Well, before I read your post I cleaned the posts better. I thought I cleaned them pretty well before. But I finally broke down and paid the $10 for a cleaning kit. I guess my kid put so much pepsi on it over and over that it built up quite a thick layer of corrosion. Then I replaced the cable and it started right away. I tested with the voltmeter and it read about 14.7 volts. Hope that's not to high.
But like the others said, and I admit, I am not that smart with this stuff. I am over 63 years old and haven't worked on engines since our John Deere tractor back in the 60's and our Allis Chalmers which used a magneto. We didn't have to worry about all the high-tech back then.
So anyway, now my pontiac engine light is on all the time. Wonder what I did to it.
One time I did accidentally make a big spark when I touched the terminals between the two cars backwards while using the Pontiac to jump the Hyundai. Trying to hurry, working on Sunday, etc...., well now what?
I checked the Pontiac voltage. It's about 12.5 with the engine off and 14.8 running.
BTW, what voltage is considered over-charging?
Also, curious, but what about amperage? I guess it shouldn't be deadly, but would it blow my little VOM?
Well, I am happy I don't have to take my Hyundai in. A year ago I took it in, asked for a simple fix and they talked me into a whole bunch of stuff. It was Christmas, so I gave them $600 for stuff I could have done. But now the Pontiac could cost me even more. I am just a teacher in a school where my salary has been cut $6000.


Tom Greenleaf
Ultimate Carjunky / Moderator


Nov 27, 2012, 4:16 AM

Post #11 of 13 (2703 views)
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Re: 2002 Hyundai Accent won't start [In reply to] Sign In

Operating voltage: ..............................

Voltage regulators control the charging voltage that the alternator produces, commonly keeping it between 13.5 and 14.5 V, to protect the electrical components throughout the vehicle
  • When not replaced, the battery will discharge or over charge (destroying battery), engine will die, CEL will illuminate, charging system light will illuminate, or alternator damage may occur.


  • ***************************************
    14.8? Check or calibrate your VOM. IMO that's an odd voltage to stay at and shouldn't stay at max of range anyway. If verified you can replace just a voltage regulator in most GMs inside alternator. Any doubts on how to do that DON'T!

    T


    Hammer Time
    Ultimate Carjunky / Moderator


    Nov 27, 2012, 7:44 AM

    Post #12 of 13 (2691 views)
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    Re: 2002 Hyundai Accent won't start [In reply to] Sign In

    You charging voltage is just fine.........................

    I wish I could say the same for your truck. You seem to do more damage every time you touch it. Apparently, your idea of cleaning battery terminals was to pour Pepsi over the battery. We aren't in the 60s any more.




    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



    Tom Greenleaf
    Ultimate Carjunky / Moderator


    Nov 27, 2012, 8:13 AM

    Post #13 of 13 (2685 views)
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    Re: 2002 Hyundai Accent won't start [In reply to] Sign In

    Can't use Pepsi. Has to be the real thing....




    LMAO,

    T




    2002 Hyundai Accent won't start


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