Close
Car Questions
RepairPal is your advocate for car care advice and guidance

Voltage on gauge drops intermittently. No battery light at startup

(1998 Mercury Grand Marquis)
in Albany, NY on June 01, 2013
My 98 Grand Marquis voltage gauge started intermittently dropping and the lights would dim. I replaced the alternator and the 3 pin pigtail since it was cracking. I still have the same problem with the voltage intermittently dropping. I tested the battery, charged it overnight and even tried a new battery in it. The alternator is working sometimes, so I don't think there is an issue with the replacement.

I saw a comment in another thread:
"Turn on the ignition switch to the on but not run position do you see an icon on the instrument panel representing a battery, if you do not see this battery icon the alternator is not seeing power to allow it to charge."

So after reading that, I looked at the dash with the key on and engine not started. There is no battery light. What causes this to happen? What should I be looking for?

Thanks for any help.
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide. Learn more

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
The car was working fine until a couple weeks ago. Was on my way home from a day of driving and I noticed the clock ...
Didn't find what you were looking for?