Sometimes my interior and exterior lights including my dash lights , flicker and flash on and off when I am diving at night. What could possibly cause this to happen.
Does it flash like there was a security alert? But without the horn going off! Like 8-10 flashes and then goes back to normal!
If so I had this problem with my Jeep GC a couple years ago and had a hell of a time figuring it out. Got to the point, I wouldn't drive it at night.
When it got cold, sometimes I would have to jump the system to get it started. Checked the alternator, but the voltage show 13 Volts so thought it was okay. Replaced the battery, no change but longer between problems. Replaced battery cables, again no change but much longer between problems. Then I had the lights, AC, radio and everything on at once, and could tell that the electrical system was really stressed. Pushed in the cigarette lighter and the lights flashed before.
Changed the alternator - no more problems. Cured the not starting and lights flashing. The only thing I could come up with is that if the security system detects a low current flow it sets itself off, and then resets itself. So the low output from the alternator would cause the problem when a lot of electrical things were in operation at once.
Jun 05, 2011 |
Jeep Grand Cherokee Cars & Trucks