1. Verify Power to the Coil (Again, but more thoroughly):
* With the engine cranking: You said you have power to the coil, but you need to confirm this while the engine is actively cranking. Use a test light or multimeter to check for power at the coil's positive terminal while someone cranks the engine. It should show power only during cranking. A lack of power during cranking points to a problem in the ignition system's primary circuit (wiring, ignition switch, crankshaft position sensor, etc.).
2. Check the Coil's Output:
* Use a spark tester or inductive clamp: This is the most crucial step. Even if you have power to the coil, it might be faulty and not producing a high-voltage spark. A spark tester connects inline with a spark plug wire; a properly functioning coil will generate a visible spark across the tester's gap when cranking. An inductive clamp detects the high voltage pulses. This directly tells you if the coil is the source of the problem.
3. Inspect the Spark Plug Wires:
* Visual inspection: Look for cracks, damage, or worn insulation on the spark plug wires. Replace any that are damaged.
* Continuity test: Use a multimeter to check the resistance of each wire. A broken wire will show infinite resistance. The resistance should be within the specifications listed in your owner's manual or a repair manual.
* Properly seated: Ensure all spark plug wires are firmly connected to both the spark plugs and the distributor cap (or coil pack, depending on your Contour's setup). A loose connection will prevent spark delivery.
4. Check the Spark Plugs:
* Inspection: Remove the spark plugs and inspect them for fouling (excessive carbon buildup, oil, or fuel). If they're fouled, replace them.
* Gap: Check the spark plug gap with a feeler gauge. An incorrect gap will hinder spark generation. The correct gap should be specified in your owner's manual.
5. Investigate the Crankshaft Position Sensor (CKP):
* The CKP sensor tells the engine's computer the position of the crankshaft. A faulty CKP sensor will prevent the computer from triggering the ignition coil, even if the coil itself is good. This is a common cause of a no-start condition. You may need a multimeter or an OBD-II scanner to test it, depending on your comfort level and tools. Look for diagnostic trouble codes (DTCs).
6. Consider the Ignition Control Module (ICM):
* Some Ford Contour models have a separate ICM. If your model does, and you've checked everything else, this is another possible culprit. These modules can fail and prevent spark. They often require specialized testing tools.
7. Diagnostic Trouble Codes (DTCs):
* Use an OBD-II scanner to retrieve any diagnostic trouble codes stored in the car's computer. These codes can provide valuable clues about the cause of the problem.
Important Notes:
* Safety First: Disconnect the negative battery terminal before working on any electrical components.
* Repair Manual: A repair manual specific to your 1999 Ford Contour will be invaluable in providing detailed diagnostic procedures and component specifications.
If you've checked all of these and still have no spark, you may need to seek professional help from a qualified mechanic. They have the tools and experience to diagnose more complex issues.
