1. Battery Issues: Check your battery terminals to make sure they are clean, tight, and free of corrosion. If the battery terminals are loose or damaged, the engine will not turn over.
2. Fuel Supply: Verify that your fuel tank has sufficient fuel. Also, ensure that the fuel lines and injectors are not blocked or damaged.
3. Ignition System: Check the condition of your spark plugs, spark plug wires, and ignition coil. If any of those are worn out or defective, the engine will not turn over.
4. Fuel Pump Failure: If the fuel pump is not working, the engine won't receive the fuel it needs to run.
5. Starter Issues: Check the starter motor and its connections. A faulty starter can prevent the engine from cranking over.
6. Electrical Problems: Verify the condition of your vehicle's wiring, fuses, and relays. Any electrical malfunctions could cause the engine not to turn over.
7. Vehicle Security Systems: Some Saab 93 models are equipped with an anti-theft immobilizer system. Check to ensure the immobilizer is not interfering with the engine starting process.
If you are unable to resolve the issue yourself, it is recommended that you take your vehicle to a reputable mechanic for professional diagnosis and repair.
