A coolant leak may develop from the water pump. This can result in an engine overheating condition. A leaking water pump will require replacement.
Car problem reports
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Most reported 1990 Chevrolet Beretta problems
One or more of the fuel injectors may short out electrically causing a rough idle condition.
The steering rack may develop a fluid leak or fail causing the steering to become hard to turn.
The torque converter clutch can stick "on" after extended freeway driving causing the engine to stall when coming to a stop. Our technicians tell us when this occurs, the engine usually will restart and stall when put into gear. After allowing about twenty minutes for the engine and transmission to cool down, the engine will start and the transmission will operate normally. Replacing the torque converter clutch solenoid, transmission filter, and fluid will generally correct this issue.
The PCV vacuum hose under the upper intake plenum may become brittle and crack causing an engine vacuum leak.
The high pressure power steering hose will commonly leak fluid; it should be replaced.
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.
The timing chain tensioner and guides are prone to wear and may develop an abnormal noise, requiring replacement.
The engine vacuum hose to the MAP sensor may crack resulting in a vacuum leak causing the engine to run rough and/or stall.