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Battery or short?

  • Thread starter Thread starter joshheat25
  • Start date Start date Nov 21, 2004

joshheat25

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Nov 8, 2004
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Nov 21, 2004
#1
  • Nov 21, 2004
  • #1
I have a 2000 GT and when ever I hit the brakes, or roll down the windows, or turn up the music, anything that uses power dimms the inside lights and causes my engines idle to bog down. I was wondering if anyone else has had this problem! I think my battery is going bad or maybe coils?
 

joshheat25

Member
Nov 8, 2004
871
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16
Delaware
Nov 21, 2004
#2
  • Nov 21, 2004
  • #2
Need Help?
 

joshheat25

Member
Nov 8, 2004
871
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Nov 21, 2004
#3
  • Nov 21, 2004
  • #3
Is my Battery Worn out or What?
 

joshheat25

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Nov 21, 2004
#4
  • Nov 21, 2004
  • #4
If it is my Battery then what is a good brand of Battery!
 
B

bdcardinal

tree hugger
Jun 10, 2003
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Nov 21, 2004
#5
  • Nov 21, 2004
  • #5
Optima is a good brand. also, have your alternator checked out before you go out and buy a battery.
 

tomustang

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#6
  • Nov 21, 2004
  • #6
might want to check the spark plug wires to see if there's any cracks
 
B

bdcardinal

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Jun 10, 2003
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#7
  • Nov 21, 2004
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im thinking he would have a very hard time checking the spark plug wires considering that 2000 GTs dont have any.
 
G

gotchopsticks

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Sep 4, 2004
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Nov 21, 2004
#8
  • Nov 21, 2004
  • #8
bdcardinal said:
im thinking he would have a very hard time checking the spark plug wires considering that 2000 GTs dont have any.
Click to expand...

LMAO
 

PULMEOVR

I need a bigger E-Penis.
Sep 29, 2003
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Nov 21, 2004
#9
  • Nov 21, 2004
  • #9
Do you have underdrive pulleys?
 
D

DerekStangGT

My package is in the mail!
Feb 18, 2003
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Nov 22, 2004
#10
  • Nov 22, 2004
  • #10
joshheat25 said:
I have a 2000 GT and when ever I hit the brakes, or roll down the windows, or turn up the music, anything that uses power dimms the inside lights and causes my engines idle to bog down. I was wondering if anyone else has had this problem! I think my battery is going bad or maybe coils?
Click to expand...
mine does the same thing, when i turn on my AC full blast, my idle bogs a little, even stalled one time. but thats mostly when its cold. although i do have ~1800 watts running off my alt and battery from my audio system. do you happen to have an aftermarket stereo system? that sucks tons of power, and could be the case. someone correct me if im wrong, but coils have nothing to do with the interior lights dimming. they are part of the ignition system. if you had a bad coil or two, your car would run rough and constantly misfire. heres a good trick, let the car idle, then hold a piece of paper firmly across a tailpipe allowing a small space for exhaust to vent. if your car is misfiring, the paper will sputter back and forth and make a "whap whap whap" sound very quickly. you should be able to hear it. but i really dont think its a coil.


yeah, no plug wires here, distributers are for losers we got coil on plug baby!
 
S

silver04stang

Member
Sep 29, 2004
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Nov 22, 2004
#11
  • Nov 22, 2004
  • #11
bdcardinal said:
im thinking he would have a very hard time checking the spark plug wires considering that 2000 GTs dont have any.
Click to expand...

 
D

Darkhorse845

Banned
Nov 17, 2004
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Las Vegas,Nevada
Nov 22, 2004
#12
  • Nov 22, 2004
  • #12
bdcardinal said:
im thinking he would have a very hard time checking the spark plug wires considering that 2000 GTs dont have any.
Click to expand...
True
 

tomustang

Psychotic Member
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Jun 8, 2000
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McLean Hospital
Nov 22, 2004
#13
  • Nov 22, 2004
  • #13
bdcardinal said:
im thinking he would have a very hard time checking the spark plug wires considering that 2000 GTs dont have any.
Click to expand...


yeah true, still call them that cause everyone else does. coil-to-plug's. but i still had a misfire becuase of the boot on the spark plug, after i ran a diagnostic on it i noticed when i turned on the headlights the revs dropped. also when i went from rev to first it would cut off too.
 

joshheat25

Member
Nov 8, 2004
871
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Delaware
Nov 22, 2004
#14
  • Nov 22, 2004
  • #14
I have no aftermarket sound system and I think it is either the alternator or battery! Basically whenever I turn on something that uses power the lights on the inside dim and the engines idle is lowered. So obviously either the battery or the alternator is not working?
 
B

bdcardinal

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Jun 10, 2003
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Nov 22, 2004
#15
  • Nov 22, 2004
  • #15
check around at a few shops or auto parts stores. there are a bunch around here that will check your alternator and battery for free.
 

Marks5.0!

Founding Member
Jan 27, 2000
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0
San Antonio, TX
Nov 22, 2004
#16
  • Nov 22, 2004
  • #16
bdcardinal said:
im thinking he would have a very hard time checking the spark plug wires considering that 2000 GTs dont have any.
Click to expand...
 
N

n0v8or

10 Year Member
Aug 23, 2003
604
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Rhode Island
Nov 22, 2004
#17
  • Nov 22, 2004
  • #17
You are able to start OK, so I doubt if the battery is the cause. Does this happen only at low RPMs (less than 1500)?

First, check the condition of your serpentine belt. If it's slipping, charge capacity will suffer. If the belt is OK, my bet is on a bad/weak alternator.

Alternators have 6 diodes inside to convert the AC voltage they produce into DC. If one diode fails, you lose 16% of your charging capacity. Two, and you lost 33%.
 

RTRMustangGT

New Member
Sep 30, 2004
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Nov 22, 2004
#18
  • Nov 22, 2004
  • #18
I think that is your alternator. sounds like it is about to go. go to a autoshop and get it checked. if it is not the alternator then replace the battery and try that.
 

BayArea02GT

New Member
Sep 23, 2004
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Newark, CA
Nov 22, 2004
#19
  • Nov 22, 2004
  • #19
If I am not wrong, Sears will check your battery for free and Kragens will check the alternator.
 
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