trouble starting car
I have a 97 toyota camry, im having a hard time starting it. It doesnt do it all the time. the lights will dim, while its running it idles low and then high, i will kill it and restart it several times and the battery gets weak. I turn on headlights and it powers down and i disconected the negative cable while it was running and i could tell a slight difference in the engine. i don't know if it's my battery or altenator. can anyone help me.