1999 cougar readiness monitor

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#1
hello everyone, new guy here. what i have is my sisters 1999 cougar with 2.5 engine. (150.000 miles) it had a multitude of codes.po 171, 340,1131,1401.i managed to clear these by replacing the dpfe sensor,pcv valve, egr press. sensor. i also replaced the b1 ho2 sensor (scanner showed .1-0 volts) what i am getting now is a code po401. that comes and goes. i have checked all the vacuum hoses, cleaned out the egr passages. i will clear it and it comes back in about 1 day. i also cannot set the readiness monitor. i need this to pass emissions testing. i heard that there was a tsb on the egr system for this car, but i don't know if that applies. i would appreciate any help as i am sick of working on this heap. thanks again.
 

Transman

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#2
You cannot set the readiness monitor because the code keeps coming back and you clear the code which clears the monitors. After the codes have been cleared you need to drive, depending on the vehicle, as much as 200 miles and several cold cycles for the readiness monitors to reset. You problem is fix what is causing the code to re-appear then the readiness monitors will take care of themselves.
I did a search on Shopkey database for any tsb pertaining the your problem and found nothing. The test flow for this codes is as follows:
Possible causes are
Egr stuck closed
EGR diaphragm leak
EGR flow restricted or plugged
EGR hose faulty
EVR VPWR circuit open
EVR VPWR circuit to pcm open or shorted to power
DPFEGR sensor to VPWR circuit open
Faulty DPFEGR sensor hoses
Faulty DPFEGR sensor
Faulty DPFEGR solenoid
Faulty PCM
I recommend you subscribe to AllDataDiy on this one as it will give you step by step and various voltages needed to properly diagnose this system. Transman
 
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#3
transman, thank you for the info. i really appreciate it. i was thinking about looking at the egr valve next. the only thing is that it is a pain in the a** to remove. i checked it with the scanner and it ckd. ok electrically. the only thing left, like you stated is the egr passage and if the valve itself isn't closing all the way?????. that is the next thing i plan on looking into. i will do this in the next few days and keep you posted. i just hope it's not electrical. thanks again for your time and input.
 

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#4
Thanks Sluggo, but I still recommend you join AllDataDiy for the flow chart. It will be cheaper to follow the diagnostics then to replace every part in the system and maybe still not have it work because a wire was broken someplace. Good Luck and keep us posted, Transman
 
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#5
ford drive cycle

each obd monitor can be cleared by performing the following steps
if you only have 1 to clear, perform the step pertaining to your monitor
this is not the esiest but ive done most of them and they do work. . .
hope this helps!!!!!!!

Description of OBDII Drive Cycle
The following procedure is designed to execute and complete the OBDII monitors and to clear the Ford P1000, I/M readiness code. To complete a specific monitor for repair verification, follow steps 1 through 4, then continue with the step described by the appropriate monitor found under the "OBDII Monitor Exercised" column. When the ambient air temperature is outside 4. 4 to 37. 8C (40 to 100 F), or the altitude is above 2438 meters (8000 feet), the EVAP monitor will not run. If the P1000 code must be cleared in these conditions, the PCM must detect them once (twice on some applications) before the EVAP monitor can be "bypassed" and the P1000 cleared. The Evap "bypassing" procedure is described in the following drive cycle.

The OBDII Drive Cycle will be performed using a scan tool. Consult the instruction manual for each described function. NOTE: A detailed description of a Powertrain Control Module (PCM) Reset is found in this section, refer to the table of contents.

Drive Cycle Recommendations:

Most OBDII monitors will complete more readily using a "steady foot" driving style during cruise or acceleration modes. Operating the throttle in a "smooth" fashion will minimize the time required for monitor completion.
Fuel tank level should be between 1/2 and 3/4 fill with 3/4 fill being the most desirable.
The Evaporative Monitor can only operate during the first 30 minutes of engine operation. When executing the procedure for this monitor, stay in part throttle mode and drive in a smooth fashion to minimize "fuel slosh".
WARNING
STRICT OBSERVANCE OF POSTED SPEED LIMITS AND ATTENTION TO DRIVING CONDITIONS ARE MANDATORY WHEN PROCEEDING THROUGH THE FOLLOWING DRIVE CYCLES.

For best results, follow each of the following steps as accurately as possible:



OBDII Monitor
Exercised Drive Cycle Procedure
Purpose of
Drive Cycle Procedure
Drive Cycle
Preparation:
1. Install scan tool. Turn key on with the engine off. Cycle key off, then on. Select appropriate Vehicle & Engine qualifier. Clear all DTC's/ Perform a PCM Reset. Bypasses engine soak timer. Resets OBDII Monitor status.
2. Begin to monitor the following PIDs: ECT, EVAPDC, FLI (if available) and TP MODE.
Start vehicle WITHOUT returning to Key Off.
3. Idle vehicle for 15 seconds. Drive at 64 Km/h (40 MPH) until ECT is at least 76. 7C (170 F).
Prep for Monitor Entry 4. Is IAT within 4. 4 to 37. 8C (40 to 100 F)? If Not, complete the following steps but, note that step 14 will be required to "bypass " the Evap monitor and clear the P1000. Engine warm-up and provide IAT input to the PCM.

HEGO -5. Cruise at 64 Km/h (40 MPH) for up to 4 minutes. Executes the HEGO monitor.

EVAP -6. Cruise at 72 to 104 Km/h (45 to 65 MPH) for 10 minutes (avoid sharp turns and hills) Note, to initiate the monitor: TP MODE should =PT, EVAPDC must be >75%, and FLI must be between 15 and 85% Executes the EVAP Monitor (If IAT is within 4. 4 to 37. 8 (40 to 100F))

Catalyst -7. Drive in stop and go traffic conditions. Include five different constant cruise speeds, ranging from 40 to 72 Km/h (25 to 45 MPH) over a 10 minute period. Executes the Catalyst Monitor.

EGR -8. From a stop, accelerate to 72 Km/h (45 MPH) at 1/2 to 3/4 throttle. Repeat 3 times. Executes the EGR Monitor.

SEC AIR/CCM (Engine) -9. Bring the vehicle to a stop. Idle with transmission in drive (neutral for M/T) for 2 minutes. Executes the ISC portion of the CCM.

CCM (Trans) -10. For M/T, accelerate from 0 to 80 Km/h (o to 50 MPH), continue to step 11. For A/T, from a stop and in overdrive, moderately accelerate to 80 Km/h (50 MPH) and cruise for at least 15 seconds. Stop vehicle and repeat without overdrive to 64 Km/h (40 MPH) cruising for at least 30 seconds. While at 64 Km/h (40 MPH) , activate overdrive and accelerate to 80 Km/h (50 MPH) and cruise for at least 15 seconds. Stop for at least 20 seconds and repeat step 10 five times. Executes the transmission portion of the CCM.

Misfire & Fuel Monitors -11. From a stop, accelerate to 104 Km/h (65 MPH). Decelerate at closed throttle until 64 Km/h (40 MPH) (no brakes). Repeat this 3 times. Allows learning for the misfire monitor.

Readiness Check -12. Access the ON-Board System Readiness (OBDII monitor status) function on the scan tool. Determine whether all non-continuous monitors have completed. If not, go to step 13. Determines if any monitor has not completed.

Pending Code Check and Evap Monitor "Bypass" Check -13. With the scan tool, check for pending codes. Conduct normal repair procedures for any pending code concern. Otherwise, rerun any incomplete monitor.
Note: if the EVAP monitor is not complete AND IAT was out of the 4. 4 to 37. 8 C (40 to 100 F) temperature range in step #4, or the altitude is over 2438 m. (8000 ft. ), the Evap "bypass" procedure must be followed.

Proceed to step -14. Determines if a pending code is preventing the clearing of P1000.
Evap Monitor "Bypass" 14. Park vehicle for a minimum of 8 hours. Repeat steps 2 through 12. DO NOT REPEAT STEP 1. Allow the "bypass" counter to increment to two.

hope this helps