Why the battery starts dying while vehicle is running??
Asked by Rusty0912 Mar 24, 2016 at 12:00 PM about the 1998 Ford Expedition 4 Dr XLT 4WD SUV
Question type: Maintenance & Repair
A fried of mine has a 1998 Ford expedition with 5.4 l v8, battery was checked
and charged at advance auto and also alternator was also bench tested,
reinstalled and started right up, but within 30 minutes had to jump start vehicle
again, had to do it several times just to get it back home, what would be the
problem, tired of paying repairs, still has same problem.
7 Answers
IF ITS ACTING UP LIKE A BAD ALT I WOULD CK THE AC COMPRESSOR AS AT TIME WHEN THE AC COMPRESSOR ENGAGE IT PULL TO MANY AMPS ACTS LIKE A BAD ALTERNATOR ...BUT IT DOESNT MEAN YOU DONT HAVE A BAD ALTERNATOR AFTER 30MIN OF DRIVING THATS WHEN THE VOLTAGE REGLATOR BREAKS DOWN ...I WOULD HAVE TO SAY U HAVE BAD ALTERNATOR .
The AC is not working, next project as soon as I can fix the battery dying issue
Also after starting there is a slow beeping sound coming from passenger side dash separate from normal starting chime.
aah theres the culprit beep on passenger side i bet the car have sunroof ....on the right side there a fuse box i bet if you pull it you would find water damage in that fuse box very common on expedition and navigator....
You may have a bad battery, may be that a cell is shorted out.
I am also having that above problem with my 99 Ford Expedition.. I will have it jumped and soon as ya connect battery cable from other vehicle to mine the hood light comes on and within minutes I can start my truck .. did that today driver for a hour with it came home shut off and turned right back on it started but now 3 hours later it won’t trues makes grrr noise but nothing lights are on when open door .. this been happening for 3 months brand new battery two months ago
