1990 CRX Si: My car after it has warmed up idles weird then eventually dies. The idle will go from sitting idle up to 1.5. When it dies it won't restart without jumping it. (Also the battery dies when it is just sitting.) When it dies while driving, the battery and engine light come on. So I replaced the battery and the car starts after sitting for a while. But has the same problem with the idle then it putters out. So I replaced the IACV and test drove it. So far I haven't had the idle problem, but the battery light comes on when I press the brakes or turn on my lights. Not sure if it is going to die. When I hit the gas, take my foot off the brake, or turn the lights off the battery light goes off. Do you think that my alternator is on the fritz? If I unplug the battery while the car is running would I be able to tell that way??? I tested my alternator with the multimeter, it was good. Maybe it's intermittent. Any help would be great.