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  1. 2

    Spark Knock

    I feel a little suction but not nearly as much suction as the solenoid input line
  2. 2

    Spark Knock

    i disconnected the vacuum line going from the egr solenoid to the egr valve and am getting no vacuum at steady 2500 rpm which leads me to believe that the solenoid isn't working properly. There is vacuum going to the solenoid
  3. 2

    Spark Knock

    thank you sir
  4. 2

    Spark Knock

    how does one test for a properly operating EGR?
  5. 2

    Spark Knock

    Hello all, Ive got a 2003 4.6 XLT and I'm experience spark knock on acceleration. Any ideas as to why this is happening?
  6. 2

    Long Term Fuel Trim - Rich

    thanks for your prompt reply. I cleaned the MAF 2 weeks ago. I understand that the LTFT's are within spec., however, shouldn't there be fluctuation between negative and positive values to average the fuel compensation as close to zero?
  7. 2

    Long Term Fuel Trim - Rich

    2003 XLT 4.6. Hello all, I just analyzed my LTFT's with a OBD II scanner and Bank 2 at idle is reading 6% and increases to 12% at approx 3000 RPM, while Bank 1 reads 3% at idle and increases to 7% at approx. 3000 RPM. The car is running rich. There are no DTC codes. My gas mileage is poor. Its...
  8. 2

    Front End Popping Sound

    Hello all, I have a 2003 XLT 4.6 and am experiencing a pop when I turn backing up or moving forward during parking etc when turning the steering wheel. There are no symptoms when driving at regular speeds. The front end does not shake and there are no ball joint sounds over bumps etc. This...
  9. 2

    Aftermarket Coil replacement

    Over the weekend, I replaced coils 1 and 7 which were identified from the DTC codes. I did inspect the boots and they seemed fine with no apparent cracking or dry rot, etc. The symptoms have been eliminated. Thanks for your replies.
  10. 2

    Rear Speed Sensor Issue

    No ABS or traction control light on. I was told this by a mechanic. I suppose he assumed the hesitation was due to the sensor. I've since replaced the two suspect coils and the symptoms have been eliminated. Thanks for your prompt reply.
  11. 2

    Rear Speed Sensor Issue

    Hello all, I've been experiencing hesitation under light load primarily at speeds of 45-55. I've been told that there is a rear speed sensor that needs replacing. In addition, I'm getting DTC 0300, 0308. I know I need to replace coils, but is it possible that both the rear speed sensor and...
  12. 2

    Rear A/C Temperature Issue

    Thanks for your prompt reply. How would I test both diagnosis?
  13. 2

    Rear A/C Temperature Issue

    Hello all, I have a 2003 XLT, 4.6 with manual A/C controls and my rear A/C is blowing somewhat cold, but not anywhere close to the temperature of the front. I recently replaced the rear actuator that controls where the air blows and the temperature blender seems to be operating correctly...
  14. 2

    Aftermarket Coil replacement

    Thanks for your prompt reply. I will take your opinion in high consideration. From what I'm reading on the forum, the coils are a imminent problem with these motors.
  15. 2

    Aftermarket Coil replacement

    Hello all, I'm replacing my coils on my 2003 Expedition XLT, 4.6 and am inclined to purchase a $50-$60 set instead of OEM or Accel. I'm a low mileage driver. Any suggestions or thoughts?

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