Lights dim.....

[loud_pony]

I did a search and didn't find anything that can help.

I am having a problem with my ligts diming. I have a stock 94 Gt with just some flows. I have had the car for about 8 months and it just started doing this about 1 month ago. Yesterday I felt like the car was about to die.

I don't think the car has pully's on it. The owner of the car was an old lady when I bought it.

Any help on where I can start.

Thanks in advance

 

[topless95]

Take it to your local parts shop and have them check your battery and charging system.

 

[loud_pony]

Well battery is two monts old....
Thats what I was thinking......
Thanks for the input.

 

[SoddyRebel]

whats ur volts look like in drive at idle when they are diming?

 

[ddrracing]

+1. Whats your voltage output from the alternator?

 

[loud_pony]

I will check when i go to luch..... but hell I dont trust those tham gauges at all. My oil and temp alwasy seen to act up every once and a while. Its time to change them.

 

[topless95]

use a volt meter to check your voltage. First check it w/ the engine off, and then check it with the engine running and radio on, a/c on max, lights on, etc... With a healthy charging system(w/0 under drive pulleys) and engine at idle the voltage should be higher than when the engine is off.

 

[ddrracing]

a little under 14VDC with the accesories on, and the car running

 

[loud_pony]

Well guys.....

At ideal its around 12 and at driving its around 14.

 

[94kingcbra]

explain how they are dimming a little more..... like does it do it at a certain time ie when you hit a bump, or when the car is idling....?

 

[loud_pony]

It is doing it when the car is idling, at a red light

 

[topless95]

what does your car idle at?

 

[loud_pony]

Car idles at 800rpm

 

[topless95]

I would take the car or just the alternator to your local parts shop and have the charging system or alt tested(Most places it's free).

 

[loud_pony]

Yea I think thats whats Im going to do.

 

[94kingcbra]

I agree ^ also make sure all those wires coming off the alternator are tight, and look for corrosion, or melted wires. good Luck

 

[94kingcbra]

do you have any subs, amps, or aftermarket lights? And when they dim, is the heater on full blast?

 

[loud_pony]

No aftermarket of anything..... I did how ever have the heater on low that day.
I going to take it to a shop at lunch.

Thanks guys.

 

[ddrracing]

The voltage output of the alternator should be approximatly 14 volts at IDLE. If its at 12V and you turn on your headlights and blower, check it, and i garuntee it will be below 11V, which would cause the ligths to dim. No need to take it anywhere to get checked out, this is pretty simple stuff.

 

[foss_94gt]

if all the stuff said above checks out to be ok, check the ground wire, my car was acting up like yours and it turned out to be the ground wire wasnt tight enough