twinturbomeow

the problem is getting worse as I drive the car, the car starts at first start but after I drive it for a little while and turn off and then when I restartd it doesnt even crank over. I hear a low whistle and radio/ ac still works so that car does have power still.

Fabrik8

That sounds like a problem with the starter or starter solenoid. The whistling you're hearing is probably the starter windings trying to turn with not enough voltage. It's pretty similar to how a cordless drill sounds when the battery pack dies and the drill just whines instead of rotates.

Most likely you have a power/ground problem between the starter and starter solenoid or between the battery and starter solenoid, or a ground problem between the engine block and battery.

A power or ground problem can also affect the ECU (and attached things like the O2 sensors) so the problem starting and the problem running are most likely related. Luckily it's really easy to troubleshoot a problem where the engine isn't turning over, because that means there is a major power/ground problem which is really easy to spot with a multimeter.