2004 Buick Regal Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2004 Buick Regal
Never overpay. Check prices with our estimator
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
2004 Buick Regal ProblemsStalling 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.
One or more of the power windows may stop working due to a failed window switch. Failed switches will require replacement.
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.
2004 Buick Regal QuestionsThe car's ABS/Traction/Service engine lights come on and go off independent of any obvious issue. One wheel speed sensor has already been replaced but the local shop sees an undefined issue in the front wheels/harness. (1 answer)
Who knows the best about this car? What should concern me the most?
While driving my car this light comes on sometimes,and my car turns off in the middle of the street and all of the lights on the panel go crazy. Already changed the module and fuse box. No codes come up when we took it to the mechanic at the dealer. Only advice given from the mechanic is to wait ...
The one time I have had the code checked it seemed to be a heating thermostat. The engine is running cooler since I had the coolant reservoir elbows replaced with aluminum units rather than plastic.
2004 Buick Regal RecallsEngine Oil Leaks Onto Exhaust Manifold
Engine oil can leak onto the exhaust manifold, causing a fire hazard. This concern was addressed in previous recall notifications, but improvements to the repair have been made. Dealers will make improved repairs free of charge to resolve the concern.
Engine oil may leak from the valve cover area, which can cause a burning odor and increase risk of fire. Dealers will replace the spark plug wire retainer to redirect the dripping oil on affected vehicles, and will replace the left valve cover gasket on vehicles with the 3.8L V6 supercharged engine.