Problem Reports
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1998 Chevrolet Monte Carlo
Intake Manifold Gasket May Leak Coolant or Engine Oil
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.
High Pressure Power Steering Hose Can Leak Fluid
The high pressure power steering hose will commonly leak fluid; it should be replaced.
Engine Overheating Due to Water Pump Leak
The water pump may develop a coolant leak resulting in an engine overheating condition.
Engine Stall Or No Start Condition
The fuel pump may fail causing engine to stall and not restart.
Serpentine Belt Tensioner Pulley May Wear Out
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.
Corrosion At Ignition Coil Towers
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.
Stalling Due to Mass Air Flow or Crankshaft Position Sensor Failure
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.
Oil Pump Drive O-ring May Leak Oil From Rear of Engine
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.
Check Engine Light With Code P0171 and/or P0174
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.
Power Window Not Working Due to Failed Switch
One or more of the power windows may stop working due to a failed window switch. Failed switches will require replacement.
Corrosion on Battery Cable Ends
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.
Intake Manifold Gasket May Leak Engine Oil
The intake manifold gasket may develop external engine oil leak. The manifold gasket will need to be replaced to correct this issue.
Key Stuck in Ignition Lock Cylinder
The automatic transmission shifter may fail, or a wire may break near the shifter causing the ignition key to become stuck in the ignition lock cylinder.
Crankshaft Position Sensor, Ignition/Powertrain Control Module May Fail
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.
Poor Ride/Handling Due to Worn Suspension Struts
The front struts may show signs of wear, or be excessively bouncy ride at freeway speeds. This may begin to occur at around 75,000 miles.
Transmission Fluid Leak From Cooler Line
An automatic transmission fluid leak may develop from the rubber section of a transmission cooler line. In some cases the rubber section of hose can be replaced. In others, the complete cooler line must be replaced to correct this type of leak.