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post #1 of 4 (permalink) Old 06-30-08, 01:07 PM Thread Starter
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2001 expedition throttle problem

My 2001 expedition 5.4L is having a problem with fuel delivery. It runs fine up until I get to a light or stop sign, then Ill lose all throttle response and the engine starts stalling almost dying. If i floor it then I can get it to move but I can hear backfiring when I do it sometimes. This is what I've changed so far
Fuel pump, MAF sensor , all 02 sensors, IAC, pcv valve, throttle position sensor,
cylinder head temp sensor, air temp sensor. Ive also checked fuel filter and its fine. Strange thing is that when I changed the throttle position sensor, that helped a little as it give me response now when I floor it.

My next guess is fuel pressure regulator.... Anybody ever have this problem before?

Forgot to mention it wont always do it

Last edited by jrios6450; 06-30-08 at 01:35 PM. Reason: edit:forgot to mention it doesnt always do it.
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post #2 of 4 (permalink) Old 07-02-08, 05:28 PM Thread Starter
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Re: 2001 expedition throttle problem

bump
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post #3 of 4 (permalink) Old 07-02-08, 06:53 PM
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Re: 2001 expedition throttle problem

Is the check engine light on? Any codes? Have it checked for any pending codes. Auto Zone and Advanced do this for free. Some Fords had trouble with the wire connection at the fuel pressure regulator, but it should throw a code.
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post #4 of 4 (permalink) Old 07-03-08, 08:13 PM Thread Starter
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Re: 2001 expedition throttle problem

*Update!
Turns out it was the egr sensor. Replaced it and Its running great now!
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