While driving and sometimes idle the headlights and interior lights while dim and then go bright and will repeat. Sometimes for a little time or for like 20 min drive. The battery meter dips from about 15 or 16 down to below 14 and then back up to normal. The battery in the truck is a optima yellow top and is about 1 to 2 years old and the alternator is about 8 to 10 months old. When I replaced the old alternator and tension pulley. With the one thats in now it fixed the problem for a couple months and then started back up again. I do have a aftermarket radio in the truck but the problem did not occur when first installed or parts were replaced. Have tried stock radio and that did not fix the problem. As you can imagine this issue is very annoying.
have the same problem?
Wednesday, April 15th, 2015 AT 10:23 PM