2003 Monte Carlo SS Hesitates and Dies after running for awhile

There are several potential issues that could be causing your 2005 Chevy Monte Carlo to spit and sputter while driving. Here are a few possibilities:

1. Fuel delivery issues: If your engine is not receiving the correct amount of fuel or air, it can cause hesitation or rough idling. This could be due to a clogged fuel filter, a malfunctioning fuel pump, or a problem with the air intake system.
2. Ignition system issues: A faulty spark plug, ignition coil, or other component of the ignition system can cause misfires, which can make the engine hesitate or sputter.
3. Emissions system issues: Your vehicle's emissions system is designed to reduce harmful pollutants in the exhaust. A malfunctioning component of this system, such as the oxygen sensor, can cause the engine to run poorly.
4. Electrical issues: A damaged or worn electrical component, such as a sensor or relay, can cause the engine to run rough or stall.
5. Transmission issues: If your vehicle is experiencing transmission problems, such as slipping or shifting issues, it can cause the engine to hesitate or sputter.

To determine the exact cause of the problem, it's best to have your vehicle diagnosed by a certified mechanic. They can perform a diagnostic scan to check for any error codes or issues with the engine, transmission, or emissions system.

Did you check fuses and relays first? Diagnose first, then repair. A new motor comes after you connect 12 volts to the old one and see if it works.

https://www.google.com/search?q=2002+chevrolet+ss+monte+carlo+seat+not+moving+forward

Fuse Box Diagram Chevrolet Monte Carlo (2000-2005)

https://fuse-box.info > chevrolet > chevrolet-monte-carl...
2000, 2001, 2002, 2003 - Here you will find fuse box diagrams of Chevrolet Monte Carlo 2000, 2001, 2002, 2003, 2004 and 2005, get information about the ...

What you do is Google the codes & read up on them

Type: 2004 Monte Carlo OBD POO68 etc

I would guess when you say you need help you,
don't have the years of experience & test equip
to work on it anyway

http://www.autozone.com/autozone/parts/Duralast-Throttle-Position-Sensor/2002-Chevrolet-Monte-Carlo/_/N-jgb6uZ9gsmg?itemIdentifier=195864_0_0_Try this.Autozone will take part back if not fixed.

If you are driving the car and it wont start after driving awhile. Do a wiggle on the CKP (crank position sensor) this sensor is located at the front main engine pulley, I am seeing a lot of loose male to female connection shut car off.

check for a plugged fuel filter, or run a fuel pressure check if need be.

Check your firing order, could have crossed a couple wires.

Nope.

try to clean the MAF which locat on the throtel and check the spark plugs from miss fire