As the title says, everytime I turn on the blower and/or the high beams. It feels like it takes up more power from the battery and the car will eventually stall. Anyone else ever have this problem before and what can I do to remedy this?

ps
If I dont turn on the blower or the high beams, the car will be fine.

 

Test your Alternator

 

Definitely sounds like an alternator. Start your car, unhook your battery if it stays running you have problems elsewhere.

 

Just dealt with this after replacing the battery even though my connections were clean i couldnt even get the car to even start without a jump & did run ok till the simillar issue occured. I was also told bad alternator but new bat. should have at least started, i went through every secondary ground only to find by volt meter post to post i was only getting 12.5 v then used neg. meter lead to second ground on fender under distribution fuse block & got 14.8v. Check your negetive terminal! Mitsubishi OE lead has a bushing in th neg terminal I cleaned a lot till that bushing was removed it as u said under any load brights etc..gave me hell! Check if your terminal is equiped with that on neg. side if not DVOM post to post while running for 14 plus volts if no then from pos. to any secondary ground before you buy an alternator! OE BRASS SLEEVE IN NEG. CABLE TERMINAL. Hope this helps any

 

UPDATE: Thank you guys for the suggestion, I will get the alternator tested tomorrow and hopefully get this issue resolved. I drove the car again today, everything is running fine now.

What I did was I started the car, let it idle for 5 minutes, then turned on the high beam and let the ECU learn and work it out, then turned the wheel all the way to the right/left and again let it learn. Now its ok but definitely not something I would want to do everything I disconnect the battery. I will keep on posting if the alternator is in fact going bad. Thanks again!