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General Smog Check
 

How To Perform a Dodge Intrepid Drive Cycle?

My Dodge Intrepid failed the smog check recently because the emission monitors were not ready. The smog technician said I need to drive my Dodge through a drive cycle. I'm not quite sure what a drive cycle is, and the tech did not have any solid info either. He just said to drive the car for a few hundred miles. Is there a specific way which I should drive my Intrepid to get the monitors ready? I need to pass the smog check asap as my tags are already expired. Thank you.

Answer:  

We understand your Dodge Intrepid is having difficulty getting its emission monitors Ready for the smog check. Emission monitors are programmed to run while your Intrepid is being normally operated (driven). However, due to different driving habits, the criteria required to run a monitor may not always be met. Following the Dodge Intrepid drive cycle below should allow all emission monitors to complete. The drive cycle must be followed accurately. Take extra caution when performing the drive cycle on public roadways. Perform the drive cycle at your own risk, and perform the drive cycle safely and obey all traffic laws.

Emission monitors are internal self-tests which the engine control computer (ECU) performs in order to verify specific emissions systems, such as the EGR system, EVAP system, oxygen sensors and Catalyst, are functioning properly. If any one monitor is incomplete (except for the EVAP) your Dodge Intrepid will be unable to pass the smog test. In order to make the monitors ready for the smog check you'll need to drive your Intrepid through what is referred to as a Drive Cycle.

Usually driving 200-300 miles over the course of a few days and in both city and highway traffic conditions is enough to get the drive cycle complete. Due to individual vehicle owner driving patterns however, sometimes the criteria required to get a particular monitor to initiate and/or become ready is not met. In such instances, it is required that a specific drive cycle pattern which is designed for the Dodge Intrepid be followed.

The drive cycle is a bit complex. Please perform is at your own risk. If you feel you may be unable to perform the drive cycle below safely, please seek assistance from a reputable smog check repair station or Dodge dealership.

How To Perform Dodge Intrepid Drive Cycle

A. All Monitor Drive Trace - This will complete all emission monitors without having to perform specific monitor driving patterns.

Pre-Conditioning Requirements:

MIL must be off - Cold start (Cold soak required; vehicle must be sitting overnight, at least 8 hours). Fuel level is between 15% and 85%. Make sure your gas tank never has a full tank nor less than 1/4 of fuel during the drive cycle.

Driving Procedure:

1) Warm engine up for five minutes (must reach closed loop)

2) Drive (with steady throttle) at a speed between 40 and 60 mph for 8 minutes.

3) Stop and idle for 3 minutes.

4) Drive (with steady throttle) at a speed above 20 mph for 2 minutes.

5) Turn key off, leave off for ten minutes (to run O2 sensor heater monitor).

B. Catalyst Monitor Drive Trace

Pre-Conditioning Requirements:

- MIL must be off.

- No DTCs present.

- Fuel level is between 15% and 85% full.

- ECT above 70º F.

- Engine must have run at least 90 seconds

- Engine between 1,350 & 1,900 rpm.

Driving Procedure:

1) Idle vehicle for five minutes (to reach closed loop operation).

2) Drive with a steady vehicle speed between 30 and 45 mph for 2 minutes.

C. EGR System Monitor Drive Trace - Vacuum controlled

Pre-Conditioning Requirements:

- MIL must be off.

Driving Procedure:

1) Idle vehicle for five minutes (to reach closed loop operation).

2) Drive with a steady vehicle speed between 40 & 60 mph for 8 minutes.

D. EGR System Monitor Drive Trace - Electronic

Pre-Conditioning Requirements:

- MIL must be off.

- MAP must be between 0-60 KPa.

- Engine speed between 500-850 rpm.

- ECT is above 180º F (90º C).

- No misfire temporary (pending) or matured fault present.

- A/C clutch, PS Switch and Cooling fans do not change state (turn off).

Driving Procedure:

1) Idle vehicle for five (5) minutes (to reach closed loop operation).

2) Drive with a steady vehicle speed between 40 & 60 mph for 2 minutes.

3) Idle vehicle for three (3) minutes.

E. Evaporative System Monitor Drive Trace

Trace 1: Standard Type

Pre-Conditioning Requirements:

- MIL must be off.

- No Evaporative DTCs present.

- Fuel level is between ½ and full.

(Note: monitor may still run with tank fill between 15% and 85%).

Driving Procedure:

1) Idle vehicle for five minutes (to reach closed loop operation).

2) Drive with a steady vehicle speed between 30 and 45 mph for 2 minutes.

Trace 2: Leak Detection Pump

Pre-Conditioning Requirements:

- MIL must be off.

- No Evaporative DTCs present.

- Fuel level is between 30 & 85 % full.

Driving Procedure:

1) Cold soak vehicle, start and idle vehicle for 4 minutes.

2) Drive in-town (stop and go) for 5 minutes, using smooth accelerations and decelerations.

3) Stop and idle vehicle for 4 minutes.

F. O2 Sensor Monitor Drive Trace

Pre-Conditioning Requirements:

- MIL must be off.

Driving Procedure:

1) Idle vehicle for five minutes (to reach closed loop operation).

2) Drive with a steady vehicle speed above 25 mph for 2 minutes.

3) Stop and idle for 30 seconds.

4) Smoothly accelerate to a speed between 30 and 40 mph.

5) Repeat steps 3 & 4 five (5) times.

G. O2 Sensor Heater Monitor Drive Trace

Pre-Conditioning Requirements:

- MIL must be off.

Driving Procedure:

1) Idle vehicle for five minutes (to reach closed loop operation).

2) Shut engine off and leave vehicle off for ten minutes.

If readiness status of all monitors do not switch to “complete,” ensure preconditions are met, turn the ignition switch OFF, then repeat the drive cycle. Completing the Dodge Intrepid drive cycle above should set the emission monitors required to pass the smog check.


posted by SmogTips Support 08-22-2018 05:38 PM
 


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