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 MANUALSSAAB1987900 BASE, 2D HATCHBACK, 2.0 J, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEIGNITION SYSTEM - BOSCH HALL EFFECTTESTINGPRE-TEST PROCEDURES
1987 Saab 900 Base, 2D Hatchback, 2.0 J, Automatic
Pre-Test Procedures
1987 Saab 900 Base, 2D Hatchback, 2.0 J, AutomaticSECTION Pre-Test Procedures
- Ensure battery is fully charged before making tests. Ensure there is fuel in tank. Check all ignition wiring. Remove any spark plug wire and connect test spark plug to wire. Test spark plug must have electrode gap set at .16" (4 mm). Ensure spark plug is well grounded.
- Crank engine. If spark is present, check ignition timing and adjust if necessary. Check fuel system to ensure engine is receiving sufficient fuel. If not, repair fuel system.
- DO NOT connect any condenser to terminal No. 1 of ignition coil. Connect and disconnect test instruments only when ignition is off. DO NOT touch or remove high tension wires when engine is running or cranking.
- Disconnect ignition wires only when ignition is off. DO NOT crank engine unless high tension wire is removed from distributor cap and grounded with a jumper wire.
- DO NOT use a battery charger for more than one minute with battery cables connected or exceed 16.5 volts while charging.
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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.