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How do I install a Voltage Regulator on a 1984 freightliner cabover

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If you are talking alternator regulator then find the existing unit and change it out with a new unit. Some alternators have the regulator as part of the brush set in the back of the alternator. With an income earning vehicle ,although it may be expensive to take it to an accredited truck auto electrician the cost of the job will be far less than the income earned by getting the vehicle back on the road in the shortest possible time.

Posted on Nov 24, 2014


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Posted on Jan 02, 2017

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SOURCE: volkswagon 1984 voltage regulator

it is on the back of the alt.very changeable with out removing alt.
2 phillips screw.becarefull installing the new one,it is easy to break off carbom leads.make sure the little leaf that contacts regulator in alt is clean.

Posted on Jun 22, 2008

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SOURCE: 1984 Ford F250 5.8L 2

This is not rare. Possibly bad "new" alternator or bad "new" regulator. Have seen it happen many times. :-)

Posted on Jan 07, 2009

  • 492 Answers

SOURCE: where is the voltage regulator

GM alternators have the voltage regulator built into the alternator.

Posted on Mar 13, 2011

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Dd15 2015 freightliner will not charge. batteries good, alternator new, wires and cable conn. good. low voltage dtc's are in common powertrain control mod. is cpc the issue?

voltage regulator is a problem
it is either part of the alternator , external or part of the ECM
have an auto electrician check the charge circuit

Nov 03, 2017 | Cars & Trucks

1 Answer

2003 freightliner mt45 battery indicator stays on.

Put a volt meter across the battery and if it reads less than 13 volts then it has a problem. The system should be 13.5-14.5dc..... 15 volt max. If it reads low only that idle, the engine may be idling to low, the regulator is bad, the belt is slipping, or the system has to great a load on it while idling(to many lights and electronics). If it comes up over 13.5volts when the engine is revved up then the regulator/slipping belt/ or load is most likely the problem. If it does not come up to the voltages listed above then the regulator/alternator are faulty.

Aug 06, 2012 | Cars & Trucks

1 Answer

84 dodge ram battery wont charge

If it has a voltage regulator it should get power from the key switch to the field wire on the regulator.
You should have battery voltage at the big wire on the alternator with the key off.
I would check for a fuseable link between the alternator and the battery first.

Jul 21, 2012 | 1984 Dodge Ramcharger

1 Answer

Where is the voltage regulator for a 1984 Camaro Berlinetta ????

GM alternators have the voltage regulator built into the alternator.

Mar 13, 2011 | 1984 Chevrolet Camaro

1 Answer

Do wires go from alt to reg

Can't remember if 1984 had a separate regulator. If the engine has a computer that's where the regulator willl be. If you do have a separate regulator it will have 2 wires. The green wire goes to the alternator field circuit. The other field circuit wire gets ignition on voltage as does the center terminal on the regulator, either a red or blue wire, probably blue.

Mar 06, 2011 | 1984 Dodge Ramcharger

1 Answer

Is there a wirer that runs from the alternator to the battery on a 1984 mercury capri. The car is not charging the battery and I replaced all the battery and starter cables

From the alternator the AC is converted to DC and regulated so as to make a controlled charging at all levels of the alternator RPM when the engine revs. This is to keep the high voltage of AC to DC from damaging the battery and so the regulator/controller is an important part.
So you must first check your alternator voltage/current , then the controller regulator and the battery voltage change can be seen with a voltmeter across it. Also the currrent to the battery can a be checked with an ammeter in parallel.
So check these tips and comment.

Aug 31, 2010 | 1984 Mercury Capri

1 Answer

I have a 1984 ford f150 with a new voltage regulator and perfectly working alternator but it charges at over 16 volts

a low battery in you meter could cause a higher reading. I've seen this before. Other than that the regulator is not working perfectly if its over charging or if you have a battery that will not hold a charge'

Jul 30, 2010 | 1984 Ford F 150

2 Answers

1984 honda prelude battery on

Do u have the carbureted or fuel injected model? (both were available that year) The carb. model has a separate voltage regulator which is mounted on the right front shock tower. The fuel injected model is inside the alternator, under the end cover.
Have the alt. tested before u purchase a new one to make sure that's the problem. Most parts stores will check it for free. Be sure to disconnect the neg. battery cable before u start to remove it. Let me know how u make out. Curt

Mar 18, 2009 | 1984 Honda Prelude

2 Answers

Volkswagon 1984 voltage regulator


The voltage regulator is usually built into the alternator.

Very best regards


Jun 06, 2008 | 1984 Volkswagen Rabbit

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