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.
1987 Saab 900 Base, 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE
Fuel Injection System - Cis (8-Valve): Testing: Preparation: Notes
- All CIS systems are very sensitive to air leaks. Check condition of rubber boots, hoses and gaskets. Other areas of air leakage are the injector "O" rings, cold start valve, oil filler cap and dipstick.
- Install pressure gauge to perform fuel pressure tests. Pressure gauge is installed in line between control pressure regulator and fuel distributor. See Fig 1 .
- To operate fuel pump with engine not running, disconnect fuel pump relay from panel. Insert jumper wire into sockets that correspond to terminals No. 30 and 87 on relay. Turn ignition on. Place pressure gauge as low as possible in engine compartment. Open and close valve 5 times to bleed gauge. Place valve in open position and hang out of the way. Turn pump off.
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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