Dead battery light is turning on and off HELP!! PLEASE!!

[imGOINGin!]

I have a 2003 Svt Cobra. My red dead battery light keeps turning on and off! My batter has been tested and it is in good shape. ANY ONE KNOW WHAT COULD BE THE PROBLEM???

 

[Kilgore Trout]

Take the car to AutoZone to have the entire charging system tested for free in the parking lot. Also check battery terminals for solid connections.

 

[imGOINGin!]

thank you I will do that

 

[Stark77]

Are you running underdrive pulleys? If so, this could be one cause if your light is coming on at low speed/RPM. My battery light comes on all the time, but my voltage doesn't drop. Once you get it scanned, if it doesn't throw any codes, I wouldn't worry about it.

 

[imGOINGin!]

No no underdrives. Yeah but its just annoying to see it turning on and off..

 

[twogts4us]

Likely the alternator. My 02 GT ate them like breakfast. Fortunately that was when it was still under warranty..I must had hit a bad batch of them...I went thru about 6 of em in 2 years!

 

[Kilgore Trout]

I agree it is probably the alternator. On Cobras they fail MUCH more often because they are in a different and far hotter place. There is a guy on Modular Fords that has an awesome alternator thread going and re-manufactures Cobra alternators. Check it out...

 

[joshjwc9]

I have had a friend with a 03 Cobra go through the same process. I believe after going through several, he went out and got a higher amp PA one. He bought it through a reputable seller online and hasn't had to send it in for warranty since he did that. He holds onto his stock one in case this PA one craps out on him..

 

[imGOINGin!]

I wish it was the Alternator but I got it tested and thy said it was fine. I will get it re tested just to make sure but My guess is a bed sensor

 

[GDawg]

I wish it was the Alternator but I got it tested and thy said it was fine. I will get it re tested just to make sure but My guess is a bed sensor

There is one wire from your alternator that feeds that warning light. Check fuse #5 (15A). Pull it out and really check it. That may be the cause.