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Discussion Starter · #1 ·
Early this year I had to get a smog test done on my ST so I could register it here in Las Vegas. To my surprise the car failed due to the o2 senor and the o2 sensor heater not showing ready. At the time I was running a COBB stage 3 tune, after some research I found out about the stage 3 problems with COBB. I reset the tune to stage 2 and tried again with no luck, after more research mostly in these forums I discovered a simple defouler could fix the issue. After I installed the defouler I reset the tune (still at stage 2) and the KAM and tried again, but again no luck. Next I replaced the o2 sensors thinking they might have burnt out (I was in the Air Force stationed in Germany so I took her on the autobahn a lot) but again no luck. A few days ago I caved and put the stock down-pipe back on thinking the COBB down-pipe must be the problem, but after 120 miles (both highway and city) over 2 days the o2 sensor still is reading not ready. The evap sensor is also not ready but it is hot out here so I am not surprised it isn't clearing even though it was when the weather was cooler. Now I don't know what to do so I am turning to the ST gods and asking for any advice you can give me to get this problem fixed and finally get my baby registered. Below is a list of everything I have done to the car.

COBB: Front mounted intercooler, CAT back exaust, Stage 2 tune (most up to date)
CP-E: Cold air intake, Stage 2 rear motor mount.
Ford racing short throw shifter
Turbo smart blow off valve
Seeda sound symposer delete kit
Everything is is simply cosmetic

236 Posts
Ford Focus Drive Cycle

The following procedure is directly from Ford and designed to complete the OBDII monitors required to get your Ford Focus to pass the OBDII Monitors portion of the smog check, also known of the I/M readiness test. You may use a scan tool in order to monitor the status of the emission monitors as your Ford Focus is being driven.

Drive Cycle Recommendations:

1.Your Ford Focus's emission monitors (readiness flags) will complete quicker when using a "steady foot" driving style during cruise or acceleration modes. Operating the gas pedal in a "smooth" manner will minimize the time required for monitor completion.

2. Your Focus's fuel tank level should be between 1/2 and 3/4 fill during the drive cycle in order to allow the EVAP monitor to run.

3.The Evaporative Monitor can only operate during the first 30 minutes of engine operation. During the EVAP portion of the drive cycle, drive in a smooth fashion to minimize "fuel slosh".

Drive Cycle Preparation - 1. If using a scan tool, go ahead and connect it now. Turn key on with the engine off. Cycle key off, then on. Select the appropriate vehicle make and model on your scan tool. Start your Ford Focus WITHOUT returning to Key Off. Idle the vehicle for 15 seconds, and then drive at 40 MPH until engine coolant temperature is at least 170°F, which is normal engine operating temperature. 10 to 15 minutes of drive will achieve this.

HEGO Monitor - 5. Cruise at 40 MPH for up to 4 minutes.

EVAP Monitor - 6. Cruise at 45 to 65 MPH for 10 minutes (avoid sharp turns and hills).

Catalyst Monitor - 7. Next, drive your Ford Focus in stop and go traffic conditions. Include five different constant cruise speeds, ranging from 25 to 45 MPH over a 10 minute period.

EGR Monitor - 8. From a stop, accelerate to 45 MPH at 1/2 to 3/4 throttle. Repeat this pattern 3 times.

SEC AIR/CCM (Engine) - 9. Bring your Ford Focus to a stop. Idle with transmission in drive (neutral for M/T) for 2 minutes.

CCM (Trans) - 10. If your Ford has a manual transmission, go ahead and accelerate from 0 to 50 MPH, continue to step 11. For Automatic Transmissions, start from a stop and in overdrive, then moderately accelerate to 50 MPH and cruise for at least 15 seconds. Stop the vehicle and repeat without overdrive to 40 MPH cruising for at least 30 seconds. While at 40 MPH, activate overdrive and accelerate to 50 MPH and cruise for at least 15 seconds. Stop for at least 20 seconds and repeat step 10 five times.

Misfire & Fuel Monitors - 11. From a stop, accelerate to 65 MPH. Decelerate at closed throttle until 40 MPH (no brakes). Repeat this 3 times.

Readiness Check - 12. If using a scan tool, go ahead and access the ON-Board System Readiness (OBDII monitor status) function on the scan tool. Determine whether all emission monitors have completed.

Evap Monitor "Bypass" - 13. Park vehicle for a minimum of 8 hours. Repeat steps 2 through 12.
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