Battery Voltage - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 07-11-2009, 11:21 AM Thread Starter
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Battery Voltage

My batteries are brand new and my alternator is good as well. My battery voltage will run up to about 18 while driving and it shuts the radio off then when i stop it runs back down to normal till i mash the gas pedalagain. Any help will be greatly appreciated........

2000 F-250 PSD 7.3 L
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post #2 of 7 Old 07-11-2009, 06:06 PM
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Sounds like the regulator on your alternator is going out.

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post #3 of 7 Old 07-11-2009, 07:04 PM Thread Starter
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what does that mean whe the regulator is going out what should i do replace the alternator

2000 F-250 PSD 7.3 L
Rough country nitro shocks
20 inch moto x wheels
35 inch toyo open county mt
5'' turbo back exhaust
Sinister SS Up pipes
Sinister 160cc/80% injectors
RR Billet Wheel
1.0 ar housing
RR CCV delete
RR AIH delete
Non EBPV pedestal
Machined high flow outlet
Bully dog shift kit
RR HPX crossover
Zoo dad mod
Foil delete
PHP Hydra(Chatham Tunes)
Autometer Gauges
AFE stage ll intake
Cool Twist Intercooler
08-14 tailights
05 Harley headlights
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post #4 of 7 Old 07-11-2009, 08:53 PM
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If the regulator is indeed bad,then yes,you need another alternator.That is what sounds like is happening.


2001 F250.Custom Tuned,Ball-Buster Turbo,5"Exhaust
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post #5 of 7 Old 07-12-2009, 06:24 AM
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^^^^ what they said.

Eli Benson - EMT, Ambulance Mechanic
----------
'08 F350 Dually KR - Spartan'd
'07 F250 CC SB 4x4 XLT - SCT /w Innovative Tunes
4 '09 & '10 E350 6.0l ambulances
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post #6 of 7 Old 07-12-2009, 07:01 AM
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i agree , an alternator can overcharge as well as undercharge , replace alternator , regulator is built in

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post #7 of 7 Old 07-12-2009, 10:37 PM Thread Starter
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Thanks guys. I gonna replace it tomorrow

2000 F-250 PSD 7.3 L
Rough country nitro shocks
20 inch moto x wheels
35 inch toyo open county mt
5'' turbo back exhaust
Sinister SS Up pipes
Sinister 160cc/80% injectors
RR Billet Wheel
1.0 ar housing
RR CCV delete
RR AIH delete
Non EBPV pedestal
Machined high flow outlet
Bully dog shift kit
RR HPX crossover
Zoo dad mod
Foil delete
PHP Hydra(Chatham Tunes)
Autometer Gauges
AFE stage ll intake
Cool Twist Intercooler
08-14 tailights
05 Harley headlights
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