Question about 1991 Jeep Wrangler

1 Answer

1991 jeep wrangler: alternator overcharging

I have a 1991 jeep wrangler straight 6, 5 speed. alternator is overcharging the battery. the alternator is brand new. can anyone help me?

Posted by Anonymous on

  • Anonymous Jul 06, 2009

    i knew the voltage regulator was inside the alternator but i already replaced the alternator and i'm still having the same problem. i know there's a chance this second one is bad too but it's a small chance. would it be possible i have a short somewhere?

×

Ad

1 Answer

Anonymous

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 135 Answers

It sounds as the voltage regulator which is built into the back of the alternator has stuck. Occaisionally this even happens on new ones. Would suggest taking the alternator back as it shoud be under warranty.

Posted on Jul 06, 2009

  • Anonymous Jul 07, 2009

    Normally if you have a short in the circuitry it will pull down the voltage not increase it. I would check at the battery with a voltmeter and see what the indication is there. While at a normal idle if it is putting out more than 13.8 volts it is probably the voltage regulator. If the charging rate is in the acceptable range 12-14 volts at the battery the problem may lie in your gauge.

×

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Why battery is overcharging?


sounds like a regulator problem .

May 03, 2015 | 1993 Jeep Wrangler

1 Answer

My jeep won't crank, it will turn over, but not fire, any ideas? I have an automatic straight 6, 4 liter 1991. I have replaced the coil and battery, has plenty of gas, but has been sitting for a couple...


Check to make sure the check engine light lights up in the dash, before cranking. If it does not come on, your jeep ecu is in need of repair.

Apr 23, 2011 | 1991 Jeep Wrangler

1 Answer

I have a 1989 jeep yj. 6 cyl 5 speed 4x4. the batterie and alternator wouldnt charge so i replaced them both and it didnt make a difference. the jeep runs until the batterie dies. help


Have you checked to see whether the battery lamp illuminates with the key on only. If not then the fuse to is blown or that wiring to the field circuit is faulty.
Did you replace the parts with new ones?? You did not state.
No battery warning lamp no charge simple.

Dec 06, 2010 | 1989 Jeep Wrangler

1 Answer

95 wrangler yj. has no power at high speeds


Have you had fuel pressure tested, and/or filter changed. Have you checked for plugged exhaust, such as catalytic converter? Quite often engine will also run a little hotter than normal when exhaust is plugged.

Nov 05, 2009 | 1995 Jeep Wrangler

2 Answers

Charging


Most likely it is the voltage regulator that's going bad which allows overcharging. this is inside the alternator, so it most likely needs replacement. you could pull it out and take it in to most auto parts stores and they would check it to make sure.

Jul 06, 2009 | 1991 Jeep Wrangler

1 Answer

89 Wrangler dies with engine running plus turn signals, and radio


Have you checked the tightness and/or tried replacing the alternator/drive belt? I have an 89 cherokee and I had the excat same problem .. I replaced my alternator drivebelt and wala .. fixed .. Crayz

Feb 25, 2009 | 1989 Jeep Wrangler

1 Answer

Jeep wrangler alternator prob


If this is a 2000 JEEP WRANGLER TO MY KNOWLEGE this vehcle does not have an external regulator. ITS built into the alternator. There is 6 sylinder and 4 cylinder wrangler in that year and neither have an external regulator. Good luck and conatc if you needmore help. Check this link out..http://www.autopartswarehouse.com/details/QQJeepQQWranglerQQNSAQQAlternatorQQ19992000QQUSALT-5214.html

Jan 28, 2009 | 2000 Jeep Wrangler

1 Answer

I can't take off or put on a new serpentine belt on 91 yj


you need to loosen the alternator bolts then turn the bolt under the alternator to relieve tension on the belt

Jan 17, 2009 | 1990 Jeep Wrangler

1 Answer

Check gauges light is on and battery is overcharging


You might want to call the dealer.
I think there was a service bulletin to replace the connectors in the back of the instrument cluster

Aug 20, 2008 | 1999 Jeep Wrangler

Not finding what you are looking for?
1991 Jeep Wrangler Logo

Related Topics:

1,168 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

Marvin
Marvin

Level 3 Expert

85239 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8984 Answers

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

Answer questions

Manuals & User Guides

Loading...