Archived voltage at 18+, check gauges light on.

[Jeepmullet]

Hi,



Was driving home from a hundred miles away and looked up to see gauge lights flickering. I looked down and the voltage was pegging the line ON THE HIGH SIDE... just then it pegged the gauge and the check gauges light came on. I shut the truck off and pulled off the road, I started the truck back up and it drove fine, but the voltage was still really high, I would say 15volts. No additional codes from the normal lift pump code and speed sensor code I've had since installing my fuel system and catcher.

 

[EKlem]

Do you have access to a multimeter or a voltmeter? If you took a reading directly off your battery terminals, that would tell you whether the problem was with your gauges or with the voltage from the alternator. If you don't have one, they are pretty cheap at most automotive stores. I think that you want to see something like 14. 2-14. 4V at the battery terminals.



Another thing you could do is turn your lights on when the gauge is really high. If they seem brighter than normal, it is likely that your voltage is too high. If not, it is probably just the guage malfunctioning.



Good luck.