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Problems for specific Chevrolet Monte Carlo years:

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Newest reported Chevrolet Monte Carlo problems

 

Reported by susielou for the Chevrolet Monte Carlo

I was driving early one morning and it was dark out. All of a sudden my headlights went out. I hit the dimmer switch and they came back on, but while driving home the same thing happened again. I took it to one garage and he could not figure out what the problem was. The next time I drove after dark, the same thing happened again. I took the car to different garage and found that the multi function switch in the steering column was bad an...

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Reported by whiteshadoww and 1 other for the Chevrolet Monte Carlo

2005 Monte Carlo shifting extremely hard on initial takeoff from a complete stop. About every 3-4 weeks car jerks violently forward. Once out of first gear, the car runs smoothly. Took the car to a Chevy dealership who was able to duplicate the issue and confirmed problem with the valve body. Valves, gaskets and selenoid replaced at a whopping $1400. No other major mechanical issues with the vehicle, I'm the original owner and car is main...

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Verified for the Chevrolet Monte Carlo

The mass air flow or crankshaft position sensor may fail causing the engine to intermittently stall. It may be necessary for the engine to cool down before it will restart.

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Verified for the Chevrolet Monte Carlo

The exhaust gas recirculation (EGR) tube which connects the EGR valve to the intake manifold may develop an engine vacuum leak, causing the Check Engine Light to illuminate with code P0171 and/or P0174 stored.

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Verified for the Chevrolet Monte Carlo

Flex fuel vehicles can develop fuel calibration issues resulting in illumination of the Check Engine Light and/or lack of power. This commonly occurs if only short trips are taken after changing fuel type from E85 to gasoline or gasoline to E85. In most cases, the fuel calibrations can be reset for gasoline using a properly equipped scan tool.

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Verified for the Chevrolet Monte Carlo

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

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Verified for the Chevrolet Monte Carlo

The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Our technicians tell us that operating the engine  with a coolant/oil mix can result in internal engine damage. Replacing the intake manifold gasket should correct these leaks.

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Verified for the Chevrolet Monte Carlo

The crankshaft position sensor, ignition module, and/or powertrain control module (PCM) may fail resulting in illumination of the Check Engine Light with ignition system related fault codes stored in the PCM. Patience is necessary when dealing with this specific situation as normal diagnostic procedures are not effective. In many cases, the best option is to replace parts, one at a time until the fault is corrected.

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Verified for the Chevrolet Monte Carlo

Corrosion may develop at the connection between the ignition coil tower and spark plug wire resulting in an engine misfire. The Ignition coil and spark plug wire should both be replaced to correct this condition.

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Verified for the Chevrolet Monte Carlo

An engine oil leak may develop from the rear of the engine. This is commonly caused by a failed oil pump drive o-ring seal. The leaking o-ring should be replaced to correct this concern.

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Verified for the Chevrolet Monte Carlo

The serpentine belt tensioner pulley may wear out. Our technicians tell us that in order to get a new pulley from General Motors you must purchase a complete belt tensioner assembly.

 

21 Reports
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Verified for the Chevrolet Monte Carlo

The catalytic converter may become plugged resulting in loss of engine power. General Motors has extended the catalytic convertor warranty on some models to 10 years or 120,000 miles. Please contact your local GM dealer to see if your vehicle is included.

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Verified for the Chevrolet Monte Carlo

An engine oil leak may develop from the oil pump drive O-ring. This can often be confused with an intake manifold gasket leak. Careful inspection is required to determine the exact cause of the leak. Replacement of the failed 0-ring will commonly correct this concern.

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Verified for the Chevrolet Monte Carlo

The upper intake manifold gasket and/or a PCV vacuum lines/hoses can develop vacuum leaks with age. This type of leak can result in a higher that normal or rough idle.

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Verified for the Chevrolet Monte Carlo

Acid may leak from the battery at the cable connections, resulting in corrosion on the battery cable ends and in the battery tray. A Leaking battery should be replaced and the cables thoroughly cleaned or replaced if necessary.

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