Breeze, Cirrus, Sebring Convertible and Sedan, Stratus Sedan, 1999-2005

What To Do When There Are No DTCs 2

Print

Symptom Diagnosis Tests



Test 5: Surge Condition
Preliminary Checks
  1. Discuss how the operation of the torque converter clutch (TCC) or air conditioning compressor can affect the "feel" of the vehicle during normal operation.
  2.  
  3. Search for any technical service bulletins related to this symptom.
  4.  

Test 5 Chart

StepActionYesNo
1Step Description: Verify the surge condition Drive the vehicle and attempt to verify that the vehicle surges at cruise speeds. Does the engine have a surge condition-Check for any stored codes. If codes are set, repair codes and retest. If no codes are set, go to Step 3.Go to Step 2.
2Step Description: Condition does not exist! Inspect various underhood items that could cause an intermittent surge condition (check for leaks in the MAP sensor vacuum lines). Were any problems located in this step-Correct the problems. Do a PCM reset and "Fuel Trim Relearn" procedure. Then verify condition is repaired.The problem is not present at this time. It may be an intermittent problem.
3Step Description: Check/compare PID values Connect a Scan Tool to the test connector. Start the engine and allow it to fully warmup. Monitor all related PIDs on Scan Tool (HO2S switching, LONGFT, and the TCC operation) Compare VSS PID reading to speedometer. Were all PIDs within their normal range-Go to Step 4. Note: Verify that the front HO2S responds quickly to throttle changes. Check for silicon contamination on the front HO2S (this can cause a rich A/F signal).One or more of the PIDs are out of range when compared to "known good" values. Make repairs to the system that is out of range, then retest for the symptom.

Test 5: Surge Condition (Continued)

Test 5 Chart (Continued)

StepActionYesNo
4Step Description: Check the Ignition System Inspect the coils for signs of spark leakage at coil towers or primary connections. Check the spark output with a spark tester. Test Ignition system with an engine analyzer. Were any faults found in the Ignition system- Make repairs as needed Go to Step 5.
5Step Description: Check the Fuel System Inspect the Fuel delivery system for leaks. Test the fuel pressure, quality and volume. Test the operation of the pressure regulator. Were any faults found in the Fuel system- Make repairs as needed Go to Step 6.
6Step Description: Check the Exhaust System Check Exhaust system for leaks or damage. Check the Exhaust system for a restriction using the Vacuum or Pressure Gauge Test (e.g., exhaust backpressure reading should not exceed 1.5 psi at cruise speeds). Were any faults found in Exhaust System- Make repairs to the Exhaust system. Then retest the symptom. Return to Step 2 and repeat the tests from the beginning to locate and repair the cause of the "Surge" condition.
  1. Discuss how the operation of the torque converter clutch (TCC) or air conditioning compressor can affect the "feel" of the vehicle during normal operation.
  2.  
  3. Search for any technical service bulletins related to this symptom.
  4.  

Test 5 Chart

StepActionYesNo
1Step Description: Verify the surge condition Drive the vehicle and attempt to verify that the vehicle surges at cruise speeds. Does the engine have a surge condition-Check for any stored codes. If codes are set, repair codes and retest. If no codes are set, go to Step 3.Go to Step 2.
2Step Description: Condition does not exist! Inspect various underhood items that could cause an intermittent surge condition (check for leaks in the MAP sensor vacuum lines). Were any problems located in this step-Correct the problems. Do a PCM reset and "Fuel Trim Relearn" procedure. Then verify condition is repaired.The problem is not present at this time. It may be an intermittent problem.
3Step Description: Check/compare PID values Connect a Scan Tool to the test connector. Start the engine and allow it to fully warmup. Monitor all related PIDs on Scan Tool (HO2S switching, LONGFT, and the TCC operation) Compare VSS PID reading to speedometer. Were all PIDs within their normal range-Go to Step 4. Note: Verify that the front HO2S responds quickly to throttle changes. Check for silicon contamination on the front HO2S (this can cause a rich A/F signal).One or more of the PIDs are out of range when compared to "known good" values. Make repairs to the system that is out of range, then retest for the symptom.

Test 5: Surge Condition (Continued)

Test 5 Chart (Continued)

StepActionYesNo
4Step Description: Check the Ignition System Inspect the coils for signs of spark leakage at coil towers or primary connections. Check the spark output with a spark tester. Test Ignition system with an engine analyzer. Were any faults found in the Ignition system- Make repairs as needed Go to Step 5.
5Step Description: Check the Fuel System Inspect the Fuel delivery system for leaks. Test the fuel pressure, quality and volume. Test the operation of the pressure regulator. Were any faults found in the Fuel system- Make repairs as needed Go to Step 6.
6Step Description: Check the Exhaust System Check Exhaust system for leaks or damage. Check the Exhaust system for a restriction using the Vacuum or Pressure Gauge Test (e.g., exhaust backpressure reading should not exceed 1.5 psi at cruise speeds). Were any faults found in Exhaust System- Make repairs to the Exhaust system. Then retest the symptom. Return to Step 2 and repeat the tests from the beginning to locate and repair the cause of the "Surge" condition.
 
label.common.footer.alt.autozoneLogo