1990 Buick Regal Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1990 Buick Regal
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1990 Buick Regal ProblemsRough and/or High Idle Due to Engine Vacuum Leak
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.
Fuel injectors can short-circuit electrically causing a rougher than normal idle and reduced performance.
The ignition module or crankshaft position sensor may fail causing the engine to die and not restart. Diagnoses will be necessary to determine if the module or crank sensor is causing the no start condition.
1990 Buick Regal QuestionsI have a 1990 buick regal custom. It will crank but has no spark. Please need help its driving me nuts (2 answers)
The car is a 1986 Buick grand national is not a 90
Have brake lights and turn signals front and rear also have headlights...