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1998 lincoln towncar new battery new alternator run car mins…

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1998 lincoln towncar new battery...
1998 lincoln towncar new battery new alternator run car for 20 mins and battery goes dead alt light does not come on what could be drawing battery down
Submitted: 2 years ago.Category: Lincoln
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Answered in 5 minutes by:
1/16/2016
Lincoln Mechanic: john aka eauto, The Car Guy replied 2 years ago
john aka eauto
john aka eauto, The Car Guy
Category: Lincoln
Satisfied Customers: 17,070
Experience: ase certified imac cerified
Verified

have you confirmed charging voltage?

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Customer reply replied 2 years ago
14.1
Lincoln Mechanic: john aka eauto, The Car Guy replied 2 years ago

and it draws the battery down? is it 14.1 the whole 20 minutes?

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Customer reply replied 2 years ago
Seams to be fine then radio goes out first then dash lights then car quits battery dead
Customer reply replied 2 years ago
I can tell battery is about dead when heater fan starts to slow down
Lincoln Mechanic: john aka eauto, The Car Guy replied 2 years ago

sounds like its running off the battery...recheck the alternator its not charging

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Customer reply replied 2 years ago
Brand new alternator today old alt tested good to
Customer reply replied 2 years ago
Could it be the heater motor resister
Lincoln Mechanic: john aka eauto, The Car Guy replied 2 years ago

there is no way that would draw it down that quick its a charging problem

can you test out put with the alternator in the car?

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Customer reply replied 2 years ago
I had auto zone check new alt checked out ok 14.1 with car running
Lincoln Mechanic: john aka eauto, The Car Guy replied 2 years ago

with loads on or off?

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Customer reply replied 2 years ago
Everything on
Customer reply replied 2 years ago
I went to 2 different autozone stores and both times checked out the same
Lincoln Mechanic: john aka eauto, The Car Guy replied 2 years ago
  • To prevent damage to the Generator (GEN) , do not make jumper wire connections except as directed.
  • Do not allow any metal object to come in contact with the housing and the internal diode cooling fins with key on or off. A short circuit will result and burn out tile diodes.

NOTE:

  • Battery posts and cable clamps must be clean and tight for accurate meter indications.
  • Refer to the applicable Battery Tester Instruction Manual for complete directions on testing the charging system.
  1. Turn OFF all lamps and electrical components.
  2. Place the vehicle in transmission range NEUTRAL and apply the parking brake.
  3. Perform Load Test and No-Load Test.

Load Test

  1. Switch the Battery Tester to the ammeter function.
  2. Connect the positive and negative leads of the Battery Tester to the corresponding battery terminals.
  3. Connect the current probe to the generator B+ output lead, Circuit 38 (BK/O).

  1. With the engine running at 2000 rpm , adjust Alternator, Regulator, Battery And Starter Tester (ARBST) load bank to determine the output of the generator. Generator output should be greater than shown on the graph. If not, refer to Pinpoint A. See: Testing and Inspection\Pinpoint Tests\A: Charge Lamp On W/Eng Running (Low Voltage

No-Load Test

  1. Switch the Battery Tester to the voltmeter function.
  2. Connect the voltmeter positive lead to the generator B+ terminal and the negative lead to ground.
  3. Turn all electrical accessories off.
  4. With the engine running at 2000 rpm, check the generator output voltage. The voltage should be between 13.0 and 15.0 volts. If not, refer to the Symptom Chart for diagnostic procedures.
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Customer reply replied 2 years ago
114 amps on load test
Lincoln Mechanic: john aka eauto, The Car Guy replied 2 years ago

has the battery been load tested?

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Customer reply replied 2 years ago
Tried two brand new batteries today
Lincoln Mechanic: john aka eauto, The Car Guy replied 2 years ago

ill opt out maybe anther expert has a idea,,, deff sounds like its a voltage regulator issue

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Lincoln Mechanic: Chris (aka- Moose), Technician replied 2 years ago
Chris (aka- Moose)
Chris (aka- Moose), Technician
Category: Lincoln
Satisfied Customers: 51,626
Experience: 16 years experience with Lincoln
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Welcome, I'm Chris (aka Moose) I'm an independent contractor here at Just Answer.

The previous tech opted out, would you like my help?

Thanks for asking your question and letting me try to help you.

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Customer reply replied 2 years ago
please help
Customer reply replied 2 years ago
New alt not charging new battery or something is shorted out???
Lincoln Mechanic: Chris (aka- Moose), Technician replied 2 years ago

When you did you charging system test and got 14.1 volts was that reading taken on the battery posts idling in park with headlights, wipers, and HVAC on?

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Lincoln Mechanic: Chris (aka- Moose), Technician replied 2 years ago

Disconnect the negative battery cable. With all doors closed, no lights being commanded on, like a hood light if applicable. Connect your volt meter to the negative post and negative cable. What does the meter show in the DC milliamp setting?

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Lincoln Mechanic: Chris (aka- Moose), Technician replied 2 years ago

I like to stay in contact with my customers that appear not pleased, still working on the concern, or have not rated yet. I assume you were not pleased with my help. I hate that you have spent money to get an answer but left not happy. Can you tell me why, or can I help more. If its more help you need just reply and we can pick up where we left off.

Thanks Chris

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