Question about 1998 Jeep Wrangler

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1998 jeep wrangler 4.0 litre , air: problem is alternator not putting charge into battery. had battery checked and alternator checked, both are good. is there a voltage regulator that could be bad?

If there is a voltage regulator where is it located? what else should i check?

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  • 129 Answers

Theres fusable links in the wires if they are burned replace

Posted on Nov 30, 2012

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Posted on Jan 02, 2017

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SOURCE: 2001 Jeep wrangler not charging. Alternator has

on the field wires ones a posative and one a negative and the single post gets connected to a wire that runs straight to the main fuse box in the engine compartment then is fused to another wire that goes to the battery have that fuse checked it could be your problem as far as the feild wires the positive side only works when you start the vehicle up to engage the field

Posted on Apr 13, 2009

  • 6982 Answers

SOURCE: 1999 jeep wrangler guages went crazy

Put a volt meter on the battery itself and take a reading when it is doing that. If charge rate is over 14v the alternator may be working but the output is not being cut down to "useful voltage" You may have a regulator problem.

Posted on Jun 23, 2009

fixyathing
  • 341 Answers

SOURCE: jeep won't start.

have the alternator checked...the voltage regulator is located inside the alternator for your info

Posted on Aug 11, 2009

wireguy212
  • 1627 Answers

SOURCE: my 1998 jeep grand cherokee isint charging, ive

On the terminal maked"l" you need to put switched power from the ignition[ the problem], will go away.If this is not an option then you can get an alternator repair shop to put a self exciting regulater and it will kick in with a quick rev of the engine,no wireing required

Posted on Dec 08, 2009

steve_e_uk
  • 1675 Answers

SOURCE: 1998 jeep wrangler had alternator check out at

no not normally ,the regulator is connected to the altenator itself, have you checked the wires that connect to the alternator?

Posted on Jan 30, 2010

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2 Answers

Does jeep nwrangler (1998) 4.o litre with air have a voltage reulator that if bad would stop alternator from putting charge into battery? and where is voltage regulator located?


The voltage regulator it in the ECM.What you need to do is go to the basic which can be overlooked like is the Alternator fuse burnt open that will require a new fuse, how is the battery terminal connection? You need to check that,Or how is the calbe from the alternator to the Battery is the connection in good shape? Those you need to check you mainly need a voltmeter to do this but a good visual inspection can get results,

Nov 23, 2012 | 1998 Jeep Wrangler

1 Answer

Why no one has the answer for the "gauges light on" for Jeep Wrangler 1998?


get a meter and use to test with fully charged battery. the big wire should have battery voltage if not ck fuse if fuse good ck fuse box, if voltage present ck connector with running one should have battery voltage the other less than battery voltage. if no battery voltage alternator no good. if no voltage on less then battery its signal comes from ecm/pcm trace back wire to ecm/pcm if any bad spots repair.if ok replace ecm/pcm. if battery voltage present on other wire it goes to the alternator cut out relay trace wire and repair if bad,if good ch relay im not sure how it is wired but will try to find out tomorrow and get back to you.

Aug 14, 2012 | 1998 Jeep Wrangler

1 Answer

What is the expected output of a alternator in a Jeep 4.0L Sahara (yr. 2000)? My Jeep's ''check gauges'' light came on, and the battery gauge dropped to nothing. Checked the alternator (with a voltage...


You shoulld expect more than 12.8 volts from the alternator up to nearly 14 volts when charging a low battery. The battery can only show the amount of voltage your alternator is sending to it after being used for a while. I would suggest that you have the battery tested & recharged completely, your voltage will be above 12 volts and if it returns to below that , you will know your alternator is not charging. Also, if you test the output of the alternator and see it is below 12 volts after the battery is fully charged at 12+ volts you will have confimed the problem also.

good luck.

Jan 31, 2010 | 2000 Jeep Wrangler

1 Answer

1999 jeep wrangler guages went crazy


Put a volt meter on the battery itself and take a reading when it is doing that. If charge rate is over 14v the alternator may be working but the output is not being cut down to "useful voltage" You may have a regulator problem.

Jun 23, 2009 | 1999 Jeep Wrangler

1 Answer

1995 Jeep wrangler not charging properly


lf you have replacement cable ends on your battery, check that wires are not corroded under the straps. Also check alternator ground (run a ground wire directly to the alt case) I have seen "lazy" regulators at times but this is very rare. Also make sure drivebelt is tight enough to prevent slipping. Has your battery been charged and load tested?

Mar 28, 2009 | 1995 Jeep Wrangler

1 Answer

1998 Jeep Wrangler 4cylinder Won't start


Connect the charger to the terminals on the baqttery not the cable ends. This will ensure a good connection. If battery still does not charge fully, replace it, clean the cable ends before attaching them. Then put a volt meter on the battery and check that charging system is putting out at least 13.5v a little more is ok, With accessories on including high beams lowest reading should be 12.75 and not drop even after five or ten minutes.
Jumping across a bad battery will often prevent enough power to the starter, If still in no-start with new battery starter may also have failed.(but will need testing to verify.

Mar 24, 2009 | 1998 Jeep Wrangler

3 Answers

98 jeepwrangler won't start


This is basic, but first off, try to shift it into neutral, and try to start it. It is easy for the linkage to get out of adjustment, where it thinks the jeep is in gear. If that does not work, make sure you have battery power to the ignition and starter.

Dec 22, 2008 | 1998 Jeep Wrangler

1 Answer

Jeep won't turn over


Check battery first. If battery is good, charge it and your vehicle should start, The symptons your having are indication of a bad charging circuit. When you start it leave the Negative battery loose enough to pull off after it is running, if it continues to run then it was a bad connection somewhere in the circuit or your regualtor, an internal part of the alternator is bad allowing the current to drain in you battery slowly over time when the engine is running. If battery checks good remove alternator and take to an autoparts store and have them check it. Generally most vehicles have a battery or charge light on the dash that will be lit.

Dec 14, 2008 | 1998 Jeep Cherokee

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