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post #1 of 16 (permalink) Old 06-30-13, 06:40 PM Thread Starter
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Need urgent help 2003 ford focus

I am having a serious problem with my 2003 ford focus it has a zetec se engine, at first the car was losing power for a few seconds while driving the rpm would go all the way down and if I mash the gas pedal at times it would rev back up. It would also cut out when the car comes to a stop in traffic. So I started with replacing the fuel filter but the problem came back after 20 minutes of driving, I was really hoping it would have been a cheap fix but next I took out the gas tank check the strainers and replaced the fuel pump and installed new spark plugs NGK LTR5GP and the car drove with no problems for two day I thought all was well I was so relieved but now a new problem surfaced. I would turn the key and hear the fuel pump kick in for two seconds, start the car it will start normal then it would start to idle rough and die slowly. Someone had suggested that the initial start of the pump would pressurize the lines but after that the pump wont continue working and the car would just use the gas that it can and die out. So what would cause the pump not to work after initial start up? What can I do to solve this problem?

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post #2 of 16 (permalink) Old 06-30-13, 08:16 PM
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Re: Need urgent help 2003 ford focus

What are the codes? Have you checked fuel pressure to see if the pump does stop? Autozone and O'Reilly's will check codes for free.

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post #3 of 16 (permalink) Old 07-01-13, 08:19 AM Thread Starter
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Re: Need urgent help 2003 ford focus

they are no code in the computer, I will have the fuel pressure tested and see what results i get.
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post #4 of 16 (permalink) Old 07-01-13, 10:08 AM
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Re: Need urgent help 2003 ford focus

Test the pressure when the problem arises.

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post #5 of 16 (permalink) Old 07-04-13, 09:07 AM Thread Starter
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Re: Need urgent help 2003 ford focus

whats the fuel pressure for the zetec se 16v engine?

Last edited by Labyrinth00; 07-04-13 at 09:08 AM. Reason: car model from europe
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post #6 of 16 (permalink) Old 07-04-13, 09:34 AM
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Re: Need urgent help 2003 ford focus

2 different sources gave 35-60 pounds, a third gave 36 to 43.

Ever notice that there's so many high performance parts available for GM products?

Did you ever think that maybe they NEED them?
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post #7 of 16 (permalink) Old 07-05-13, 05:12 AM Thread Starter
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Re: Need urgent help 2003 ford focus

Results are starts with 44 psi then drops to 28 psi and dies out
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post #8 of 16 (permalink) Old 07-05-13, 02:56 PM Thread Starter
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Re: Need urgent help 2003 ford focus

something new the pump was tested alone and provide up to 55 psi where else can i check that causing my engine not to stay on?
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post #9 of 16 (permalink) Old 07-05-13, 06:48 PM
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Re: Need urgent help 2003 ford focus

Any idea how clean your tank is?

Ever notice that there's so many high performance parts available for GM products?

Did you ever think that maybe they NEED them?
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post #10 of 16 (permalink) Old 07-06-13, 12:12 PM Thread Starter
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Re: Need urgent help 2003 ford focus

Quote:
Originally Posted by CatSkinner View Post
Any idea how clean your tank is?
the tank was cleaned when the new fuel pump was installed
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