Question about 1996 Ford Contour

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All lights blink with any rpm; fine at idle

SE with v6; since I have had alternator replaced, when I turn on headlights and/or parking lights, all the lights: head, interior, etc. blink with increase in RPM. I had my mechanic check alt, they say no problem. I have also noticed even with lights off, if I turn on my dome light, it blinks.

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Make sure your battery connections mainly your ground had a clean ground on the frame and also make sure the + red cable is secured down. Next if you know how to use a meter check that you are getting at least 14 volts dc on the battery when the car is running. This shows the battery is charging. see if the voltage is fluctuation with rpm. You have a regulator on a car that is designed to keep the voltage steady. I suspect since all your lights dim you have a regulator problem. The alternators job is just to supply a charge to the battery and it should not jump around at a steady rpm. you could have another system loading down on the 12 systems. You can try to isolate this by removing certain fuse's (not ecm or starter things you need to run the car but some of the essentials. you can also go to the fuse box and read the voltage getting to the diffrent systems to help track down the bad load. People for get how important the grounds are and tend to overlook them. where ever the ground hooks to the car make sure the paint is clear and you have good metal to metal touching. Loads on a car very from situations and maybe you can help isolate it by turning off your lights and see if it stops or turn of your radio or what not. You can isolate the load pretty easy with a good meter. I like the ones they sell at home depot for aroun 39 bucks that has the clamp on the end so you can check current. you can clamp it around the red battery cable and watch how much amps your drawing and see if it is swinging back and forth. then once again pull fuses and turn on and off the ac or what ever you can to see if you can get it to stop. one you do you found your culprit. remember that the battery is like a big capacitor and it is there to smooth out the voltage that is being supplyied to it best of luck.

Posted on Jan 02, 2009


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