Lights dimming at take off

M

MadRed92GT

Founding Member

Oct 22, 2001

104

0

16

Jackson Tennessee

Mar 5, 2008

#1

• Mar 5, 2008

• #1

I have the 130alt upgrade and my lights still dim when I take off from a stand still. I thought it was the stock alt that was the problem, but that is not the case. I upgraded the wires and all, got a new battery even though the one I had was still good, and don't know what else could be the problem. Help pleeeease!!

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

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Mar 6, 2008

#2

• Mar 6, 2008

• #2

What RPM range do they dim? Is it only from a stop or anytime you accelerate away (like if you're at 25 mph and you stand on it)?

 

M

MadRed92GT

Founding Member

Oct 22, 2001

104

0

16

Jackson Tennessee

Mar 7, 2008

#3

• Mar 7, 2008

• #3

From a stop.

 

I

irish

New Member

Oct 18, 2006

168

0

0

Florida

Mar 8, 2008

#4

• Mar 8, 2008

• #4

Did you add a 4 guage ground? How are the rest of the grounds? Have you had the alternators output checked?

Matt

 

Taz92gt

Member

Oct 4, 2006

54

1

8

Knoxville Tn

Mar 8, 2008

#5

• Mar 8, 2008

• #5

Are you running underdrive pullys?

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

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Mar 8, 2008

#6

• Mar 8, 2008

• #6

Also ensure there is no belt slippage.

 

M

MadRed92GT

Founding Member

Oct 22, 2001

104

0

16

Jackson Tennessee

Mar 9, 2008

#7

• Mar 9, 2008

• #7

Yes I did the grounds too, had the alt. output checked cause I thought I bought a bad one but it checked out ok. And I'm running under drive pullies but not on the alt.

 

M

MadRed92GT

Founding Member

Oct 22, 2001

104

0

16

Jackson Tennessee

Mar 14, 2008

#8

• Mar 14, 2008

• #8

anyone with more info.

 

jrichker

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Mar 10, 2000

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Dublin GA

Mar 15, 2008

#9

• Mar 15, 2008

• #9

A voltmeter is handy if you are familiar with how to use it to find bad connections. Measure the voltage drop across a connection while the engine is running and all the accessories are turned on. More than .5 volts across a connection indicates a problem.

See http://www.fluke.com/application_notes/automotive/circuit.asp?AGID=1&SID=103 for help for help troubleshooting voltage drops across conections.