Saturn L100 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your Saturn L100
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Saturn L100 ProblemsCheck Engine Light Due to Engine Misfire
The Saturn L100 may display the warning message "A/C off for Engine Protection" on the instrument panel. This may be accompanied by illumination of the check engine light and the temperature gauge reading cold at all times. This is a feature of the engine that is activated by the power control module when it detects the engine warming up too slowly. The OBD trouble code P0128 may also be stored.
The cause is simply a worn out thermostat that stays open at all times, preventing the engine from reaching the proper operating temperature.
Replacement of the thermostat will correct the issue.
Saturn L100 QuestionsWhy would a timing belt skip a link or break? Oil always changed every 3K miles (1 answer)
185,000 miles. Did go over a bumpy rail crossing kinda' fast, but car ran fine & started 2X after
Can't afford a new car right now. How much are used engines?