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Ask AMEDEE Your Own Question
Category: Ford
Satisfied Customers: 26237
Experience:  ASE CERTIFIED TECHNICIAN ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector
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Ford escape 2003;idle up and down and sometimes shots off;

Customer Question

ford escape 2003;idle up and down and sometimes shots off; have replaced ox sensors and MAF ; should I replace EGR valve next
JA: Does the engine stall right after starting? And what about hesitation or jerking during acceleration?
Customer: some times it jerks; most of the the time I have to view my guage
JA: Are you fixing your Escape yourself? What have you tried so far?
Customer: half and half I do what is most easily
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 9 months ago.
Category: Ford
Expert:  AMEDEE replied 9 months ago.

Hello and welcome!

My name isCustomerand I can assist you with your question.

Expert:  AMEDEE replied 9 months ago.

This idle condition you are experiencing is caused by either an air or a vacuum leak or a leaky fuel pressure regulator. Have you checked the regulator for leaks? How about fuel pressure?

Another possible cause would be a cracked or ripped air intake snorkle from the mass air flow sensor to the throttle body. This could cause a major air leak which would result in a severe lean condition.

Expert:  AMEDEE replied 9 months ago.

Look close around the intake manifold and throttle body gaskets as well as checking the vacuum hoses and lines for leaks and fix or replace any as needed.

Expert:  AMEDEE replied 9 months ago.

Here is a picture of the fuel pressure regulator. (right hand side of picture)

Expert:  AMEDEE replied 9 months ago.

I am glad I can help!

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