Chrisbo

Hi,
I have a 2010 TSX that has just recently given me a Check Charging System warning.
Does this mean the alternator is going bad? I checked the voltage while running, it varies anywhere from 13.7-14.1 and my battery reads 12.5v while off.
Everything seems ok. Any suggestion?

justnspace

iTrader: (1)

it could be a bad ground, a bad connection, bad battery or alternator. battery and alternator check okay with the supplied info you gave

fbt

clear the code and see if it returns.

Chrisbo

There are no codes to clear. The alert went off for about 2 minutes but came back on.
Any ground points in particular?
The battery is about 5 months old.
Car has about 140k miles.
belt is probably original but looks good.

Chris Kramer

Check your battery post connections making sure they are tight and not loose.......

Chrisbo

Battery post are clean and tight.
just swapped out the original drive belt because I already had the part anyway.
Problem is still there..
I went to auto zone and had them check my battery and alternator, they said test came back as good. Which I figured, because my battery with car off is 12.4v and 13.8-14.1v when on.

I'm curious if anyone would know if the idle pulley should spin several times when spun by hand.
It only spins like 2-3 times by hand with the belt off.

Belt tensioner spins freely and is quite.

Tsx780

is the alternator oem? ive had nothing but problems with aftermarket alternators