hey...i'm pretty scared now...my car's pretty old and i want it to last...really like it...so here's what's up

1) need a good tune up shop in the socal area

2) my car just did this crazy thing...it bucked...like it reved up to like 2 then went back to normal...and then the check engine light on...for as long as i've had it (3 yrs) the light hasn't gone on...and that was kinda scary...so i need some quick suggestions to fix

3) makes 2 funny sounds now...the one i described in another thread as a WAH WAH WAH when i let off the gas at 70...and now this other one that sounds like it's coming from underneath the car and it's a high pitched sound...almost like when u move ur wheels on really new or not used asphalt, like my parking garage...i know it's really hard to diagnose from that...but maybe u guys have ideas on where to go to check it up

i don't want my car to die!...what should i do