The 1977 Subaru GL has 2 recalls of equal severity, one involving a throttle that can stick wide open in cold weather and another where the fuel tank can split open under prolonged sun exposure.
In freezing temperatures below about -20 degrees Fahrenheit, moisture from inside the engine can be drawn into the carburetor and freeze around the throttle shaft, holding the throttle open and making it difficult or impossible to reduce engine power. On the fuel system side, small vents in the evaporative emissions system may be the wrong size, causing pressure to build inside the fuel tank during long periods in direct sunlight until the tank cracks and releases fuel.
At a glance
What can fail
Certain fuel tank ventilation openings may be incorrectly sized, reducing airflow. This allows fuel vapors to build pressure inside the tank, which can cause the tank to crack during prolonged sun exposure.
What the fix does
No remedy description available.
Summarized — see the official notice for exact wording, dates, and contacts.
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At a glance
What can fail
In cold weather below -29°C, moisture that condenses in the engine crankcase can be drawn into the carburetor and freeze, causing ice to form on the secondary throttle valve shaft. This can cause the accelerator to stick in the open position.
What the fix does
No remedy description available.
Summarized — see the official notice for exact wording, dates, and contacts.
