robbaric

Replaced alternator and battery and 2 days later (today) the navigation screen flickered and battery light came on... thinking maybe belt tensioner? ?

rogzballz

iTrader: (9)

Rebuilt alternator? Check connections again, it may have loosened after a couple days of driving....

Capitone

+1...Someone correct me if Im wrong, but I think u can only relieve tension to remove and replace the belt. I don't think there's any active tensioning required for our cars, so I'd def look to those connections.

tmf2004

iTrader: (15)

check battery also. I've gotten a bad battery before so it can happen

robbaric

All connections are attached. I'm talking about the main (only) belt tensioner being faulty under a load ....
Also alternator is new not remanufactured

GSGenesis

The serpentine belt tensioner, (one of two) tensioners your car has yes goes bad, there's no adjusting unfortunately, but highly doubt that's your issue man. I'd do exactly as tmf suggested, get that battery checked. Sure the coils tight to right? Terminals? Could even have a short somewhere bro draining your battery

robbaric

I'm not new at this lol.. there is no short. All connections are secure. Hasn't been an issue lately. .. which is weird. Since it was replaced it was intermittent 2 times..... both times when on acceleration hard.

marshun

sounds like a grounding problem

robbaric

Replaced battery also, no problem since