Chrysler Cirrus/Stratus/Sebring/Avenger/Breeze 1995-1998

Diagnosis and Testing

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SPARK PLUG CABLE TEST



See Figure 1



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Fig. Fig. 1: Pull off the spark plug wires (cables) one at a time while wearing rubber gloves


WARNING
Before beginning this test, be sure to wear rubber gloves and rubber-soled shoes for safety.

  1. One at a time, disengage each spark plug wire with the engine idling to check whether the engine's performance changes or not.
  2.  
  3. If the performance does not change, check the resistance of each spark plug and wire. Refer to General Information & Maintenance for checking the resistance of the spark plug wires.
  4.  

SECONDARY SPARK TEST



See Figures 2 and 3

  1. Remove a spark plug from the engine. Examine the spark plug for cracks in its insulation and replace if necessary.
  2.  



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Fig. Fig. 2: Be sure to examine the spark plug insulation carefully before testing

  1. Connect the spark plug to its spark plug wire.
  2.  
  3. Ground the spark plug's outer electrode to the engine (touch the spark plug's metal body to the engine block or other piece of metal on the car).
  4.  



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Fig. Fig. 3: The spark plug must be grounded to a metal part of the vehicle, such as the engine block

  1. Crank the engine and look for spark across the electrodes of the spark plug.
  2.  
  3. If a strong blue spark exists across the plug electrode, the ignition system is functioning properly.
  4.  
  5. Repeat the test for the remaining cylinders. If one or more tests indicate irregular, weak or no spark, refer to the coil test.
  6.  
  7. If spark does not exist, remove the distributor cap and ensure that the rotor is turning when the engine is cranked.
  8.  

DISTRIBUTOR CAP RESISTANCE TEST



See Figure 4



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Fig. Fig. 4: Testing the distributor cap for correct resistance

The distributor cap has a resistor built into it.

  1. Remove the distributor cap. Refer to General Information & Maintenance .
  2.  
  3. Using an ohmmeter, connect one lead to the center button of the distributor cap.
  4.  
  5. Connect the other lead to the ignition coil terminal.
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  7. The ohmmeter should read approximately 5000 ohms.
  8.  
  9. Replace the distributor cap if the reading is incorrect; otherwise, reinstall the cap.
  10.  

 
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