Just got a used Yaris. Some help with the small things

[rcvmini]

Originally Posted by CTScott

Sounds like the serpentine belt is loose and possible loose enough to be causing the alternator output to not be stable.

Thought it might be something like that. Is that something I can adjust myself? or maybe its time for a new belt? I'll have a look and see the condition of the belt

[CTScott]

Originally Posted by rcvmini

Thought it might be something like that. Is that something I can adjust myself? or maybe its time for a new belt? I'll have a look and see the condition of the belt

If you run for any period of time with a loose belt it becomes glazed, so your best bet is to simply replace it. They Yaris is pretty easy to change the belt on. The only potential gotcha's are being careful not to apply pressure against the oil control valve (located on the block behind the alternator) when tensioning the belt and watching out for the bottom 14mm bolt of the alternator to be corroded stuck and have it snap when loosening it.