My check engine light came on

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2001 Chevy Monte Carlo 3.8L Engine Torque Specs

https://chevy-specs.com > cars > monte3.8 > torque-spe...
2001 Chevy Monte Carlo 3.8L Complete Torque Specs List ; Water Pump Bolts Torque Spec (Long), 15 ft-lbs + 40° ; Water Pump Pulley Torque Specs, 10 ft-lbs.

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My high beams won't go off!! - Monte Carlo Forum - Monte Carlo ...

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Jun 8, 2012 - i flipped on the high beams last night and i think that switch in the column broke. ... My high beams won't go off! ... 2003 Chevrolet Monte Carlo. Help!! Need to get headlights working. - Monte Carlo Forum ...
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You Probably Need The Diagnostic Tool To Tell The (ECU)Electronic Control Unit That A New Part Has Been Installed .

If the code is 301 it means there is no power from that cylinder. It could be a problem with the ignition, fuel injector, or something mechanical.

check the oil level, then the oil filter and change the oil. if light is still on replace the oil pump. also check the old engine oil for small pieces of metal in case the engine spun a bearing if you see and dont start the engine for risk of further damage.

TURN KEY ON, DO NOT START! PUMP GAS PEDAL TO THE FLOOR 3 TIMES WITHIN 5 SECONDS, THEN WAIT AND WATCH THE LIGHT IT WILL FLASH THEN IT SHOULD GO OUT. REPEAT IF IT DOES NOT WORK THE FIRST TIME. MOTOR62500!

Re the a/c. Get a can of red tek sealer. make sure the engine is cold or you won't get the connector on to the low side port to seal properly. Follow the insrtuctions that comes with the can. Just adding the refrigerant doesn't stop the leak

Check Autozone.com. There repair section should have the torque specs and order of tightening.

Hi;
If your engine cools down when moving fast, you either have a problem with your water pump or your electric fans that cool off your radiator and a/c condenser. This is controlled by a temperature switch, but these fans should kick on instantly when A/C is selected.

If so, turn the key to the on position, do not start the engine. press the gas pedal three time all the way to the floor. the light should start to blink. turn the key off and then start the car. the light should blink a few more times and then stay off.
if this does not work then it is something with the radio that needs to be done that i do not know how to do.