For 1990-2009 cars

#### Cuts Out, Misses

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
DEFINITION: Steady pulsation or jerking that follows engine speed; usually more pronounced as engine load increases.
1 | Was the Powertrain On-Board Diagnostic (OBD) System Check performed? | -- | Go to Step 2 | Go to the Powertrain On Board Diagnostic (OBD) System Check
2 |

1. Perform a bulletin search.
2. If a bulletin that addresses the symptom is found, correct the condition as instructed in the bulletin.

Was a bulletin found that addresses the symptom?

--

Go to Step 13

Go to Step 3

3 | Was visual/physical check performed? | -- | Go to Step 4 | Go to Visual/Physical Checks
4 |

1. Check PCM grounds for being clean, tight and properly routed. Refer to Ground Distrubution in Electrical Diagnosis.
2. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 25

Go to Step 5

5 | Observe Long Term Fuel Trim on the scan tool. Is Long Term Fuel Trim significantly in the negative range (Rich condition)? | -- | Go to Step 6 | Go to Step 7
6 |

1. Check for conditions that can cause the engine to run rich. Refer to Dignostic Aids in DTC P0172 Fuel Trim System Rich .
2. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 25

Go to Step 9

7 | Is Long Term Fuel Trim significantly in the positive range (Lean condition)? | -- | Go to Step 8 | Go to Step 9
8 |

1. Check items that can cause the engine to run lean. Refer to Diagnostic Aids in DTC P0171 Fuel Trim System Lean .
2. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 25

Go to Step 9

9 | Check for incorrect idle speed. Refer to Idle Air Control (IAC) System Check . Was a problem found? |  | Go to Step 11 | Go to Step 10
10 |

1. Visually/physically inspect for the following conditions:

• | Throttle body tampering (throttle shaft stop screw turned).

• | Restricted air intake system. Check for a possible collapsed air intake duct, restricted air filter element, or foreign objects blocking the air intake system.

• | Throttle body. Check for the following conditions:

- | Excessive deposits in the throttle bore and on the throttle plate.

- | Objects blocking the IAC passage or throttle bore.

- | Excessive deposits in the IAC passage or on the IAC pintle.

• | Large vacuum leak. Check for a condition that may cause a large vacuum leak:

- | Incorrectly installed or faulty PCV valve. Refer to Positive Crankcase Ventilation Valve .

- | Brake booster hose disconnected.

2. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 25

Go to Step 8

11 |

1. Check the injector connections. Refer to

   #### Fuel Injector Control

   Engine Controls Components
   DTC P1200 Injector Control Circuit
   HO2S Sensors
   Ignition Control Module
   OBD II Symbol Description Notice
   Handling ESD Sensitive Parts Notice
   .
2. If any of the injectors are connected to an incorrect cylinder, correct as necessary.

Was a problem found?

--

Go to Step 25

Go to Step 12

12 |

1. Check for correct injector operation. Refer to the Fuel Injector Solenoid Coil Test .
2. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 25

Go to Step 13

13 |

1. Check for fuel in pressure regulator vacuum hose.
2. If fuel is present, replace the fuel pressure regulator assembly. Refer to Fuel Pressure Regulator Replacement .

Was a problem found?

--

Go to Step 25

Go to Step 14

14 |

1. Check for proper ignition coil output voltage with a J 26792 Spark Tester:

• | Clip the spark tester to engine ground.

• | Connect one end of a spark plug wire to the spark tester; connect the other end of the spark plug wire to the coil being tested.

• | Connect one end of another spark plug wire to the other coil tower; connect the other end of the spark plug wire to ground.

• | Crank the engine while observing the spark tester; a crisp blue spark should be observed.

• | Repeat the above steps for each coil.

2. If adequate spark is not present at all coils, repair as necessary.

Was a problem found?

--

Go to Step 25

Go to Step 15

15 |

1. Remove the spark plugs.
2. Check for wet plugs, cracks, wear, improper gap, burned electrodes, or heavy deposits.
3. If a problem is found, repair as necessary. Refer to On-Vehicle Service in Ignition System.

Notice: Determine the cause of the oil or gas fouled spark plugs in order to avoid damage to the new spark plugs.

Was a problem found?

--

Go to Step 25

Go to Step 16

16 |

1. Check for a loose ignition control module ground. Refer to Ground Distribution in Electrical Diagnosis.
2. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 25

Go to Step 17

17 |

1. Check ignition coils for cracks or carbon tracking.
2. If a problem is found, replace affected coil(s) as necessary. Go to Ignition Control Module Replacement .

Was a problem found?

--

Go to Step 25

Go to Step 18

18 | Using a scan tool, monitor TP angle with the engine idling. Is TP angle at the specified value and steady? | 0% | Go to Step 19 | Go to DTC P0123 Throttle Position (TP) Sensor Circuit High Voltage
19 |

1. Check PCV valve for proper operation. Refer to Crankcase Ventilation System
2. If a problem is found, repair as necessary. Refer to Positive Crankcase Ventilation Valve .

Was a problem found?

--

Go to Step 25

Go to Step 20

20 |

1. Check the Transaxle Range switch circuit. Refer to DTC P0706 Trans Range Switch Performance .
2. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 25

Go to Step 21

21 |

1. Check for the following conditions:

• | Damaged or bent crankshaft harmonic balancer interrupter rings.

• | Loose or damaged crankshaft position sensor. Refer to Crankshaft Position Sensor Replacement .

2. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 25

Go to Step 22

22 |

1. Go to Engine Misfire Mechanical Diagnosis in Engine General Information to check for the following conditions:

• | Low compression. Refer to Engine Compression Test .

• | Sticking or leaking valves.

• | Worn camshaft lobe(s).

• | Incorrect valve timing.

• | Bent push rods.

• | Worn rocker arms.

• | Broken valve springs.

2. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 25

Go to Step 23

23 |

1. Check for faulty motor mounts.
2. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 25

Go to Step 24

24 |

1. Review all diagnostic procedures within this table.
2. If all procedures have been completed and no malfunctions have been found, review/inspect the following:

• | Visual/physical inspection. Refer to Visual/Physical Checks .

• | Scan Tool data. Refer to Engine Scan Tool Data List .

• | Freeze Frame data/Failure Records Data.

• | All electrical connections within a suspected circuit and/or system.

3. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 25

Review technical bulletins

25 | Operate the vehicle to duplicate conditions present when the original symptom was noted. Is symptom still present? | -- | Go to Step 3 | System OK