My car was a little sluggish on the start up, so I figured my audio was draining my old battery too much. I replaced it with a yellow-top optima but the problem isn't going away...I had a whole new ignition put in last summer, so I don't think that's it. Any ideas???

 

Try replacing the Engine Coolant Temp Sensor.

 

What do you mean by Sluggish?

Slow crank?
No power?
Low Idle?

'splain please.....

 

slow crank like it's struggling to power up. funny thing just happened about 30 minutes ago, I was backing up and engine shut off, but power stayed on???

 

Starter or week battery.

Your stalling is another issue. Try cleaning your throttle body ---> go here www.motorvate.ca for more info.

Also as mzmtg noted, your engine coolant temp sensor may be starting to show it's age. That could cause your stalling issue, especially when the car is just warming up.

 

Starter it is! It completed died just before I went to get my wheels put on. Wasn't counting on that happening this week.