1989 Saab 900 Base, 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE

Service Intervals & Specifications

REPLACEMENT INTERVALS (ALL MODELS)

Component Interval (Miles)
Air Filter 30,000
Auto. Trans. Fluid 30,000
Brake Fluid 30,000
Coolant (1) 30,000
Fuel Filter 30,000
Oil & Filter 7500
Oxygen Sensor 60,000
PCV Valve 60,000
Spark Plugs 30,000
(1) Interval is for first service. Change every 15,000 miles thereafter.
BELT ADJUSTMENT (DEFLECTION) - 900 Series

Application Deflection In. (mm)
Alternator & A/C Compressor (1) 3/16 (4.7)
Power Steering (2) 3/16 (4.7)
(1) Deflection is with 10 lbs. (4.5 kg) pressure applied midway on longest belt run.
(2) Deflection is with 15 lbs. (6.8 kg) pressure applied midway on longest belt run.
BELT ADJUSTMENT (TENSION USING TENSION GAUGE) - 9000 SERIES

Application Lbs. (kg) Tension
Alternator & Power Steering 110-130 (50)
Factory Service Tools

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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.

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