I have a 99 dodge with a Cummins. During a winter snow storm, the truck experienced an unusual problem. The charging rate (on the amp meter) jumped to about 16 volts. This caused the head lights to brighten and the air bag light and chime went off. This problem would cycle on and off inconsistently. Once the air temperature was back to normal the trouble disappeared. The dealer could find nothing except that there was a record of an overcharging. I thought it was related to cold and wet conditions until late Friday when it happened again. However, there was nothing related to cold and wet. The problem is definitely inconsistent. This morning on the short drive to the dealer, the amp meter jumped to over charge position twice and the air bag light and chime went off. The moment I arrived at the dealers lot, the charging rate returned to normal. They have never had such a problem. My guess is it is related to whatever controls the charging. I replaced the batteries after the first trouble, however, obviously that was not the problem. Has anyone had such a problem. Any suggestion on what module that I should consider replacing? Anyone have any idea how the charging system works as there is not voltage regulator. Is there a relay somewhere. The dealer seems at a loss. any thoughts would be appreciated.
- posted
18 years ago