My1998 Ford F-150, 118,000 miles. My battery icon flashes off &on. all my lights constantly flicker, dashlights, headlights & domelights. Voltage needle also constantly moves between about 10 and 15 volts. Truck always starts, Voltage meter never goes higher or lower then normal but is the only guage needle that constantly moves?? Truck has new battery, and alternator, cables are clean. Engine is spotless. Any ideas??
2007-10-25 15:39:46 · 9 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
Truck has an aftermarket break controller for towing,belts are good.
2007-10-25 16:05:12 · update #1
Thanks All!! Bad Ground Indeed
2007-10-28 04:50:17 · update #2
This sounds like a bad ground! Check the ground cable between the engine and truck body, and check where the negative battery cable attaches to the engine! You may want to trace the positive cables back to make sure that the connections are not loose there also!
2007-10-25 15:52:12 · answer #1 · answered by fire4511 7 · 3⤊ 1⤋
Battery For Ford F150
2016-12-11 18:46:19 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Ford F150 Battery
2016-10-04 01:08:18 · answer #3 · answered by ? 4 · 0⤊ 0⤋
I agree it sounds like a ground problem. Clean up the ground cable. Also wiggle the battery cables see if it happens more or less. They can look fine on the outside but be corroded bad on the inside. If that doesn't cause any change try wiggling the battery posts. They can get corroded too and sometimes even fall out. BE CAREFUL doing this. It's only 12 volts, but it still hurts if you get shocked. All of these things are fairly inexpensive and easy fixes.
2007-10-25 16:18:53 · answer #4 · answered by musicexperience 2 · 1⤊ 0⤋
First thing to check is the inline fuse to the alternator, it is a 20 amp mini fuse and next to the battery at the wiring harness connections. Next fuse to check is fuse #19 in the box under the hood, it is a 10 amp fuse. Next, check the output voltage at the voltage regulator on the back of the alternator, the small gray box that is mounted to the back of the alternator, one of the screws that hold it on has an "F" printed next to it. With the vehicle running, check the voltage from this screw to ground, it should be 12 volts or better. Check all the alternator connections for looseness. Lastly it is not uncommon to get a bad alternator. I have had to replace MANY new alternators because they did not charge after they were installed. Just because it it is new or remanufactured, does mean that it is a good alternator.
2007-10-25 16:20:43 · answer #5 · answered by yugie29 6 · 0⤊ 2⤋
Good Auto-Electric Shop to Trace the short or Bad Plug
2007-10-25 17:33:02 · answer #6 · answered by sidecar0 6 · 0⤊ 1⤋
There is a single wire on the alternator. If I remember correctly it is a white wire with a grey connector. You can purchase a repair harness for it from most parts store. Replace it.
mike@auto-wrench.com
2007-10-25 15:56:23 · answer #7 · answered by Anonymous · 0⤊ 2⤋
Belts good?
2007-10-25 15:45:48 · answer #8 · answered by ASE_mechanic 4 · 0⤊ 1⤋
take to advance auto have them check battery and altrnator its free
2007-10-25 16:02:53 · answer #9 · answered by fubu0555 2 · 0⤊ 2⤋