1998 Saturn SL Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1998 Saturn SL

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1998 Saturn SL Problems

A/C off for Engine Protection and Engine Reads Cold

Saturn SL owners may notice the warning message "A/C off for Engine Protection" displayed on their instrument panel, 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. 

Check Engine Light Due to Gas Cap Issue

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

Inspect transmission/fluid every 30,000 miles

You may be able to prevent transmission problems by servicing the transmission and inspecting the fluid every 30,000 miles. If the fluid is dark or burned then the transmission system should be completely flushed.

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1998 Saturn SL Questions

Three of my monitors are not set and are preventing me for having my car tested. (1 answer)

How can I set or ready one of the following? Evap, O2, or Cat monitors? I need to have one more set as I'm allowed to have two that are not ready.

I have tried several different starts, driven several hundred miles and I do no have a check engine light and still get over 30 mpg as car run...

When I unlock my car the panic button sometimes goes off and the car wont start (1 answer)

How can I fix this

how do you replace the fuel tank pressure sensor in a 1998 saturn sl? (1 answer)

the car sometimes goes dead when at stop sign or light. codes read bad fuel tank pressure sensor

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