Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK1980REGAL BASE, 3.8L ENG VIN AREPAIR AND DIAGNOSISSUSPENSIONSUSPENSION CONTROL SYSTEMSELECTRONIC LEVEL CONTROLSYSTEM OPERATIONAL TESTSNOTES
1980 Buick Regal Base, 3.8L Eng VIN A
System Operational Tests: Notes
1980 Buick Regal Base, 3.8L Eng VIN ASECTION Notes
NOTE:
Cycle system by turning ignition switch "OFF" and "ON". On Eldorado, Riviera, Seville and Toronado, transmission selector must be in "REVERSE". This procedure will reset the height sensor timer circuit.
- Measure vehicle riding height and start engine momentarily. Leave ignition switch "ON".
- Apply approximately 200 lbs. load to rear of vehicle.
- There should be 8-14 seconds delay before compressor turns on and vehicle begins to raise.
- Vehicle should raise to within 3/4" of riding height by the time compressor shuts off.
NOTE: Be sure applied load has not exceeded system capacity. This could cause failure of vehicle to rise to 3/4" of unloaded height. - After removing load, there should be 8-14 seconds delay before vehicle begins to lower.
- Vehicle should be within 3/4" of the unloaded height in 31/2 minutes.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.