202 monte carlo ss got new battery i ran the car then let it sat for about 2 or 3 hours then go to start the car the battery is dead then recharged the battery and the same thing happen again ?
Check all the light in the car, one must be on. Check the sun visor lights first. Others include under-hood light, trunk lights and interior lights that come on by themselves due to faulty switches. Other reasons are a bad diode in the alternator, disconnect it and see what happens..
SOURCE: 2001 Monte Carlo battery goes dead over night
9 times out of 10 it is the factory amplifier. I had this same problem and it was the amplifier. Disconnect the amp located in the trunk by the speakers and see if the drain continues. You will not have music, but having the amp replaced with an aftermarket one will solve this problem,
SOURCE: 2002 monte carlo ss
The fuel filter is located in the pressure line that runs from the fuel tank to the engine,
near to the fuel tank.
Keep the engine off for few hours before replacing the filter, to get rid of some pressure in the lines.
SOURCE: monte carlo 2001 ss 3.8 V6
is the battery good if it is shorted out it will do this or if the charging system is not working
SOURCE: 2003 Monte Carlo SS Hesitates and Dies after running for awhile
The ck engine light should not be ignored, what sensor was shown to be bad ? Have it scanned again and replace the sensor that is bad if it still runs rough you might want to consider a tune up. Plugs, wires, fuel and air filter's and clean the throttle body with some gumout. It could also be the IAC motor Idle Air Control. Good Luck
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