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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Voltage Spike Issue

  • Thread starter Thread starter squares98
  • Start date Start date Jan 19, 2006

squares98

Member
Aug 20, 2004
852
0
17
Orange,ca
Jan 19, 2006
#1
  • Jan 19, 2006
  • #1
Tonight my voltage guage basically pegged to the right, causing the battery light to come on

When I start the car the voltage reads about 2v too high, when i touch the gas pedal the guage will peg. I had to turn off my stereo because the subs on the mach 460 kept on loosing/then regaining amp power.

Ive searched on the subject and found topics concerning the voltage regulator inside of the alternator. This does make sense to me. The alternator was always slightly audible but now it has a pretty noticable whine when you tap the gas.
Any Ideas?

also it idles fine and the needle drops down to m on normal but when you tap the gas it swings right just as quickly as the tach.
 

03ghoststang

Well-Known Member
Jul 16, 2005
1,930
1
57
Los Angeles, California
Jan 19, 2006
#2
  • Jan 19, 2006
  • #2
do yo have a capacitor for teh amp so the alternator dosent take a hard hit everytime the bass hits, but you need a new alternator
 
S

Stangdriver1119

New Member
Aug 24, 2005
231
0
0
Saddle Brook, NJ
Jan 19, 2006
#3
  • Jan 19, 2006
  • #3
i agree sounds like the alternator...or else something is shorting intermittently if your battery meter pegs for a sec then goes back to normal
 

squares98

Member
Aug 20, 2004
852
0
17
Orange,ca
Jan 20, 2006
#4
  • Jan 20, 2006
  • #4
Well the car is dead this morning which =bad voltage regulator(alternator). Just replaced the battery 1 month ago, but it could be part of the problem.
My question is.. should I replace the alternator with the 04' ford part replacement or the 98 part number replacement. The engine came with the 04 part obvoiusly, but would the 98 maybe work better?
 
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