Question about 2001 Hyundai Santa Fe

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Engine heats up & then alternator charge is weak. Had new battery & alternator installed in 2001 Hyundai Santa Fe. Now after engine heats up alternator shows little or no charge. When engine is cold algternator shows full charge. Mechanic installed another alternator but still have same problem.

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Check/inspect quality/condition of cables between the alternator & the positive (+) post of the battery. Also check quality/condition of ground cables & straps between battery negative (-) post and chassis and to engine block. One final check is the alternator's regulator connection between it and the UH (underhood) junction box (fuse & relay box).

engine heats up & then alternator charge is - 3ff9d91.jpg

Posted on Sep 07, 2009

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1 Answer

Where does the wire go when leaving the alternator on a 2002 hyundai santa fe 2.4 engine 2 wheel drive


the heavy wire runs from the alternator to the battery--charging wire
the smaller wires in a plug go to the ECM , charge light or regulator

Jul 25, 2016 | 2002 Hyundai Santa Fe

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on Oct 24, 2013 | Hyundai Cars & Trucks

1 Answer

What is the defect when your engine after heating up, the battery will weak but after 30 minutes it will energized and strong


What is the battery voltage when the engine is running? Should be above 14v. If not the alternator is dying.

Mar 29, 2016 | 2004 Hyundai Santa Fe

1 Answer

My 2001 Hyundai Santa Fe cranks but won't start. Diagnostic tester reads, ' Err ' key not detected.. Key is in the ignition !! PLEASE HELP !!!


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Jan 24, 2016 | Hyundai Cars & Trucks

2 Answers

2002 hyundai santa fe not starting. my wifes car


Sounds like the alt is at times not recharging the battery. Check to make sure the alt connections are all tight. Make sure your battery terminals are clean and tight. Some times when an alt has a lot of miles, the brush springs get weak and at times will not make connection and thus not charge. Test the system when the lights come on to make sure that the alt is putting out.

Nov 02, 2013 | 2002 Hyundai Santa Fe

1 Answer

I bought a 2001 Santa Fe a month ago. Since then we have replaced the alternator twice. Could there be something else causing the alternator to go bad? The battery is brand new as well.


alternators are electric motors in reverse basically,only a couple of things to go wrong,bearings and internal wiring(brushes)as you dont say what the problem was,and when i worked for hyundai they rarely went,so i am loathe to guess......did you buy new parts or from a dismantler?????? i dont know.....

Aug 10, 2010 | 2001 Hyundai Santa Fe

1 Answer

2004 Santa Fe smells. I just changed the battery dealer said it may need an alternator but my mechanics said that it charges ok!!


best way to check this is use a multimeter while engine is running, voltage should be between 13 and 14 amps. any lower and it may need replacing

Mar 03, 2010 | 2002 Hyundai Santa Fe

1 Answer

TCS ABS lights on & alternator not fully charging


Alt shoud be putting out 14 to 15.2 volts.

Jul 02, 2009 | 2002 Hyundai Santa Fe

1 Answer

Santa fe wont start.


Clean & scrape battery connections well to assure good electrical contact. Charge battery fully on charger. When you get it started after this, make sure that car is charging battery , first by lights on panel, and then by external measuring device if necessary and available. Many new batteries come uncharged, so that may be your main problem. Costco is a good source of reasonable cost quality batteries, but you may have to charge them and they may not install. Walmart probably good also. Both places allow returns. Follow all safety warnings on battery hookup, as hydrogen explosions are very rare, but very bad when happening, prevented by keeping sparks caused by connecting AWAY from top of battery!

Nov 30, 2008 | 2001 Hyundai Santa Fe

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