Question about 1984 Ford F 350

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Charging system 84 f350 6.9 diesel charging system not charging batterys new battery,alt voltage regulator,new positive and negative wires.Can someone help me wiyh this problem?

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  • w_warfieldjr Jul 25, 2009

    Thanks fo all your help

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  • Ford Master
  • 2,019 Answers

If you have changed the alternator and regulator, about all that could be left would either be a short circuit that is draining current away, or a bad ignition warning light bulb. That is because the power to energize the field of the alternator, comes through this dash bulb.

Posted on Jul 25, 2009

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2 Answers

Charging problem


Check that your alternator is actually charging the battery. With volt meter and car running check for at least 13.5 volts at battery. If not check fuses, big red wire from alternator to battery and for actual output of alternator at bolt where big red wire attaches to alternator. Should have battery voltage with car not running and at least 13.5 when engine is idling(motor running)

Feb 06, 2016 | 1995 Geo Tracker

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How do i fix my voltage regulator 98 dodge ram 5.2 new battery new pcm?


Voltage regulator is internal to the Alternator. You have to replace the Alternator.

Aug 13, 2014 | 1998 Dodge Ram 1500 4WD

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Where is the voltage regulator located?


The voltage regulator is built into the Alternator.

May 13, 2011 | 2003 Ford Expedition

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How do i polarize alternator after new regulator saab9000 1989?


You dont. Alternators DO NOT require polarisation as they can only be fitted to vehicles that are wired as NEGATIVE EARTH. If you have replaced the Alt, reconnect the wiring, reconnect the battery - Positive lead first then the negative lead, then start the motor !! Using multimeter, check the charge rate at the battery. It should be around 13.8 volts. The charge rate SHOULD NOT go above 14.7 volts and if it does, turn the motor off immediately and recheck the connections, especially any battery voltage sensing wires. if nothing appears to be wrong, contact an auto electrician and have them check things out. I have known faulty regulators, even in new Alternators..

Dec 27, 2009 | 1989 Saab 9000

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Remove and replace alternator


2000 Ford Truck Expedition 4WD 4.6L EFI 8cyl

Alternator - REMOVAL & INSTALLATION

4.2L Engine

  1. Disconnect the negative battery cable.
  2. Disconnect 2 alternator and voltage regulator electrical harness connectors at the alternator. To disconnect push-on type terminals, depress the lock tab and pull straight off.
  3. Remove the positive battery cable nut and remove the positive battery cable at the alternator.
  4. Rotate the drive belt tensioner away from the drive belt and remove the drive belt from the alternator pulley.
  5. Remove 3 alternator retaining bolts and remove the alternator.
To install:
  1. Place the alternator on the engine and install 3 alternator retaining bolts. Tighten the bolts to 18-22 ft. lbs. (20-30 Nm).
  2. Rotate the drive belt tensioner away from the drive belt and install the drive belt on the alternator pulley.
  3. Connect 2 alternator and voltage regulator electrical harness connectors.
  4. Connect the positive battery cable to the alternator and install the nut and washer. Tighten the nut to 84 inch lbs. (10 Nm).
  5. Connect the negative battery cable.
  6. Start the engine and check for proper charging system operation.
4.6L, 5.4L and 6.8L Engines

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Fig. 1 Detach the connectors from the alternator

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Fig. 2 Remove the nut and the battery cable from the post on the rear of the alternator

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Fig. 3 Remove the 2 front alternator mounting bolts and ...

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Fig. 4 Remove the alternator from the engine by carefully lifting it up and...

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Fig. 5 ... out of the engine compartment
  1. Disconnect the negative battery cable.
  2. Rotate the drive belt tensioner away from the drive belt and remove the drive belt from the alternator pulley.
  3. Detach the electrical harness connectors at the alternator assembly.
  4. Disconnect the positive battery cable and remove the nut and washer.
  5. Remove 2 front alternator bolts.
  6. Remove the rear alternator support bracket retaining bolts and the support bracket.
  7. Remove the alternator from the vehicle.
To install:
  1. Place the alternator in position and loosely install 2 front alternator retaining bolts.
  2. Install the alternator bracket and 3 alternator bracket bolts. Tighten to 84 inch lbs. (10 Nm).
  3. Tighten 2 front alternator retaining bolts to 19 ft. lbs. (26 Nm).
  4. Connect 2 electrical harness connectors to the alternator assembly.
  5. Connect the positive battery cable and install the nut and washer. Tighten the nut to 72 inch lbs. (8 Nm).
  6. Rotate the drive belt tensioner away from the drive belt and install the drive belt on the alternator pulley.
  7. Connect the negative battery cable.
  8. Start the engine and check for proper charging system operation.
5.8L and 7.5L Gasoline Engines and 7.3L Diesel Engine
  1. Disconnect the battery ground cable.
  2. Label and detach the connectors from the alternator.
  3. Release the tensioner and remove the drive belt from the alternator pulley.
  4. Remove the alternator retaining bolts.
  5. Remove the alternator from the vehicle.
To install:
  1. Position the alternator and install the retaining bolts. Tighten the retaining bolts to 15-21 ft. lbs. (21-29 Nm).
  2. Install the drive belt.
  3. Attach the alternator connectors.
  4. Connect the battery ground cable.

I really hope help you with this (remember rated this help) Good luck.

Oct 13, 2009 | 2000 Ford Expedition

2 Answers

What will cause a 1999 dodge diesel not to charge?? I have put new alt. on it and checked everything i know to check


How old are your batteries ? Diesels take a lot of juice to turn them over, I had a similar problem once, turned out to be the positive cable leading between the batteries.I would get a diagnostic on it to confirm your problem, could just be something simple.

Sep 01, 2009 | 1998 Dodge Ram 3500 2WD

1 Answer

New batteries and alt. still no charge.


Generator with Integral Rear Mount Voltage Regulator, Internal Fan Type With the key in the RUN position, voltage is applied through the charge indicator lamp I circuit to the voltage regulator. This turns the voltage regulator on, allowing current to flow from the battery sense A circuit to the generator field coil. When the engine (6007) is started, the generator (GEN) (10346) begins to generate alternating (AC) current which is converted to direct (DC) current by the rectifier internal to the generator. This current is then supplied to the vehicle's electrical system through the battery positive voltage (B+) terminal located on the rear of the generator. Once the generator begins generating current, a voltage signal is taken from the stator and fed back to the voltage regulator S circuit, turning off the charge indicator/lamp. With the system functioning normally, the generator output current is determined by the voltage at the A circuit. This voltage is compared to a set voltage internal to the voltage regulator, and the voltage regulator controls the generator field current to maintain proper generator output. The set voltage will vary with temperature and is typically higher in the winter than in the summer, allowing for better battery recharge. With the system functioning normally, the generator output current is determined by the voltage of the A circuit (battery sense voltage). The A circuit voltage is compared to a set voltage internal to the voltage regulator, which controls the generator field current to maintain proper output. The set voltage will vary with temperature and is typically higher in the winter than in the summer, allowing for better battery recharge in the winter and reducing the chance of overcharging the battery in the summer. A fuse link is included in the charging system wiring on all vehicles. The fuse link is used to prevent damage to the wiring harness and generator if the wiring harness should become grounded, or if a booster battery with the wrong polarity is connected to the charging system. Mitsubishi 215-Ampere Generator
The Mitsubishi 215-ampere generator is an internally regulated, brushless unit that is self-current limiting and temperature compensating. The regulator is integral with the generator and the fan is external.

VISUAL INSPECTION CHART Mechanical Electrical
  • Before attempting to test a battery, it is important to give it a thorough examination to determine if it has been damaged.
  • Batteries are tested to determine the state of charge and ability to crank an engine. The result of these tests is to show that the battery is either good, needs recharging, or must be replaced.
  • Preliminary checks to the charging system should be made regardless of the fault condition. These checks include:
    • Check the fuses/fuse links to the generator to ensure that they are not burned or damaged. This condition, resulting in an open circuit or high resistance, can cause erratic or intermittent charging system concerns.
    • Check battery posts and cable terminals for clean and tight connections. Clean the posts and the cables to ensure good electrical contact.
    • Check for secure connections at the generator output, voltage regulator and engine ground. Also check the connection at the power distribution point.
    • Check the generator drive belt to ensure proper tension and no slip between the generator pulley and the drive belt. Refer to Section 03-05 in the Powertrain, Drivetrain Manual.
    • Check battery for full charge.
  • Before performing charging system tests on the vehicle, note conditions such as: slow cranking, discharged battery, charge indicator lamp stays on with engine running, charge indicator lamp does not illuminate with ignition switch in RUN and engine not running, etc. This information will aid in isolating the part of the system causing the symptom.
  • When a relatively new battery is discharged, test for current drain. The following are some of the most common current drain concerns:
    • Glove compartment lamp stays on with the door closed.
    • Engine compartment lamp stays on constantly.
    • License plate lamp or interior lamp stays on constantly.
    • Other electronic component concerns.

Aug 14, 2009 | 2005 Ford F 350 Super Duty

1 Answer

84 ford F350 6.9 diesel charging system not charging batterys new alt,New voltage regulator, new positive and negative wires,


look for a fusible link out. You need to check for output on the alternator that you installed. make sure the batteries are fully charged before that, otherwise its not going to read right. start from the source. also, you can disconnect the batteries from the sys and do a continuity check on the wires in the loom, so you can see if current has a path, or if you have an open circuit. hope this helps

Jul 18, 2009 | 1984 Ford F 250

1 Answer

93 Ford F250 5.8 L No Charge


not cpu.
Do not field out the field wire.
Is the alternator ight coming on?
If you rev engine, does charging system start working?
There is a resister wire that provides voltage to the field circuit. If the resister is bad, you will only get voltage to the field through the dash alt. light bulb when you push enough voltage through it.

I don''t have 1993, but here is 96:

Generator with Integral Rear Mount Regulator, Internal Fan Type With the key in the RUN position, voltage is applied through the charge indicator lamp I circuit to the voltage regulator. This turns the voltage regulator on, allowing current to flow from the battery sense A circuit to the generator field coil. When the engine (6007) is started, the generator (GEN) (10346) begins to generate alternating (AC) current which is converted to direct (DC) current by the rectifier internal to the generator. This current is then supplied to the vehicle's electrical system through the battery positive voltage (B+) terminal located on the rear of the generator. Once the generator begins generating current, a voltage signal is taken from the stator and fed back to the voltage regulator S circuit, turning off the charge indicator/lamp. With the system functioning normally, the generator output current is determined by the voltage at the A circuit. This voltage is compared to a set voltage internal to the voltage regulator, and the voltage regulator controls the generator field current to maintain proper generator output. The set voltage will vary with temperature and is typically higher in the winter than in the summer, allowing for better battery recharge. With the system functioning normally, the generator output current is determined by the voltage of the A circuit (battery sense voltage). The A circuit voltage is compared to a set voltage internal to the voltage regulator, which controls the generator field current to maintain proper output. The set voltage will vary with temperature and is typically higher in the winter than in the summer, allowing for better battery recharge in the winter and reducing the chance of overcharging the battery in the summer. A fuse link is included in the charging system wiring on all models. The fuse link is used to prevent damage to the wiring harness and generator if the wiring harness should become grounded, or if a booster battery with the wrong polarity is connected to the charging system.
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  • System Does Not Charge
  • Loose or worn drive belt.
  • Open/voltage drop in Circuit 38 (BK/O).
  • Open/voltage drop in Circuit 36 (Y/W).
  • Open/high resistance in Circuit 904 (LG/R).
  • Damaged regulator.
  • Damaged generator battery


Apr 13, 2009 | 1995 Pontiac Sunfire

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