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I have a 2001 ford escape that is hesitating badly while driving ...I had it on a diagnostic and it shows the following codes.....P131 P1151 P0171 P0174 P0303 They told me that it might be the Mass Air Flow Sensor.....Does this make sense?

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  • Ford Master
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Base on the symptom it is possible that the MAF is bad. But, it could be other things as well.

I would use an OBD-II scan tool that displays English explanations for numeric codes to try to determine the exact cause.

I couldn't find the explanations for the codes listed on my online resource.

Maybe try alldata.com, but it will cost something to use that service.

Posted on Aug 30, 2010

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I need to replace my iac valve/sensor on my 2001 ford escape v6. where will i find it hiding?


Why replacing? Codes/ Check Engine Light on?

adobe.gif Printable View (263 KB) TSB
06-11-7
  • 2001-2005 ESCAPE 3.0L UNSTABLE IDLE - 2001-2003 ESCAPE 3.0L AUTOMATIC TRANSAXLE SHUDDER - MEXICO ONLY
Publication Date: May 25, 2006
FORD: 2001-2005 Escape
ISSUE: Some 2001-2005 Escape vehicles equipped with a 3.0L engine may exhibit idle speeds outside the specified range. Some 2001-2003 Escape vehicles equipped with a 3.0L engine and CD4E automatic transaxle may exhibit a transmission shudder.
ACTION: Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
  1. If the concern is a 2001-2005 Escape with idle speeds outside the specified range:
    1. Install a new idle air control (IAC) valve with jumper harness included in the kit. The new Denso brand IAC will be installed with the electrical connector facing the opposite direction of the original (Hitachi) valve which is why the jumper harness is required. The original (Hitachi) IAC connector faces the front of the vehicle while the new Denso IAC connector faces toward the rear of the vehicle.
    2. Referring to the calibration charts (Figures 1 and 2), select the applicable file and reprogram the powertrain control module (PCM) using the TSB Service Procedure and WDS/IDS release B40.5 and higher. Calibration files may also be obtained at www.motorcraft.com.
  2. If the concern is a 2001 - 2003 Escape with transaxle shudder, drain, flush and refill the transmission fluid with MERCON® Multi-Purpose Automatic Transmission Fluid. Then, referring to the calibration charts (Figures 1 and 2), select the applicable file and reprogram the PCM using the TSB Service Procedure and WDS/IDS release B40.5 and higher. Calibration files may also be obtained at www.motorcraft.com.
  3. When reprogramming the PCM use blank path programming. Select the proper file from the chart and manually enter the PCM part number or tear tag number to obtain the updated calibration file.
To Perform Blank Path Programming:
  1. Connect WDS/IDS to vehicle.
  2. Select "16 pin", select "All others, except those below", press TICK.
  3. Screen shows installation of cable, press TICK.
  4. Screen shows to turn ignition ON. DO NOT TURN IGNITION ON. Press TICK.
  5. Screen shows progress bar, then screen tells you "No communication can be established with the PCM" and asks you if you want to retry? Select "NO". With the ignition key still OFF, press TICK.
  6. Screen shows to turn ignition ON. Keep ignition in the "OFF" position, press TICK and you will be asked to cycle the key "ON" and "OFF" a few times. Please keep the key position in the "OFF" position through the key cycles.
  7. Screen will show "The diagnostic tester is unable to communicate with this vehicle." You will be prompted to "select a vehicle from the vehicle list", press TICK.
  8. A list of vehicles will be displayed, select ALL OTHERS, and press TICK.
  9. Screen shows "To enable WDS to reprogram the PCM with the correct calibration", enter one of the following: Vehicle Calibration number (7 digits), Tear Tag number (4 digits), or PCM part number, press TICK.
  10. Highlight the box next to the selection chosen, and enter ONLY ONE of the selections listed above. Press TICK.
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PART NUMBER PART NAME 5L8Z-9F715-AA Idle Air Control Valve XT-2-QDX MERCON® Multi-Purpose Automatic Transmission Fluid
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
DEALER CODING BASIC PART NO. CONDITION CODE 9F715 42

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Figure 1 - Article 06-11-7



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1 Answer

What are engine codes p1131 and p1151 mean?


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Diagnostic Trouble Code Chart

That isn't going to be a driveway job,
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Hello! Both faults are pointing at the same Oxygen Sensor...Upstream Bank 2...Meaning in the exhaust header before the Cat. converter on the right side of the engine...O2 sensors generally cause a P-code as an effect rather than a cause...But in this instance it's a defective O2 Sensor...Replace...

Guru.....Saailer

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2 Answers

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TSB
05-22-6
ISSUE:
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SERVICE PROCEDURE

Perform a self test. If DTC P1131 and/or P1151 are the only codes stored in the powertrain control module (PCM) proceed to Step 2. If any additional DTCs are present, follow normal diagnostic procedures found in the PC/ED Manual.

Remove the upper intake and replace only the port gaskets (9H486) and isolator bolt assemblies (9S479). The new isolator bolt assemblies use a rubber material that is green in color, do not install the old isolator bolt assemblies with the black rubber material. Do not replace any other intake parts or gaskets.
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PART NUMBER PART NAME
1L3Z-9H486-AA Port Gasket
3F2Z-9S479-AA Isolator Bolt

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