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  1. #1
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    Default Ford Focus dies at cold start if not step on gas pedal

    2002 Focus with 2.0L DOHC Zetec engine. At cold start, the engine would start, but the speed would drop and die if not stepping on the gas pedal. If I step on the pedal once and get the engine speed QUITE high, and then let go the pedal, it will run fine then, and I can drive without any other problem. I don't really need to keep it at high speed for any time, and so I don't think it's warming up issue. It always starts and runs fine when warm. I just replaced the idle air control valve yesterday, but that didn't get rid of the problem.

    The old IAC valve looks suspicious to me. The whole valve stem is covered with a layer of dust. I would expect a section without dust the the valve stem moves up and down when it works. But then the new IAC valve didn't fix the problem.

    Hope someone can help. Thanks.

  2. #2
    goldsex's Avatar
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    This....

    Resident AEM, K&N and Spectre Performance guy.

  3. #3
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    Thanks for your suggestion. So I went out and took a look. Mine looks fine as far as I can see and feel. It then goes under the manifold, and I can't see the other end. Is it PCV tube?

  4. #4
    goldsex's Avatar
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    Yes, Check it while it's running that's when it looks like it's collapsed.
    Resident AEM, K&N and Spectre Performance guy.

  5. #5
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    Checked. Still looking fine while running. Thanks.

  6. #6
    baker of shartmuffinz hyprshart's Avatar
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    my money is on the IACV (idle air control valve) it is located on the intake mani near the middle. you cant really test it, i ad an idle problem that it would stall whenever the A/C was on, changed it and it fixed it.

    not a cheap fix (at least to me) cost me $75 at autozone

  7. #7
    goldsex's Avatar
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    He already replaced it.... The only thing I can think of is a Vac leak that seals up when the car gets warmed up as the seals expand from heat.... I would bust out the propane torch and start looking for leaks.
    Resident AEM, K&N and Spectre Performance guy.

  8. #8
    [FJ] Specialist G-forces's Avatar
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    Does this happen all the time when it's cold, or only under certain conditions, like a frosty/foggy/humid morning about 32-36 degrees?

    Mine starts on no more than 3 cranks, and immediately settles down to a smooth idle, almost always... except when conditions are as stated above. Then it cranks several times, misses, stumbles, and needs to be blipped once or twice before it will smooth out. I'm thinking in my case, it might be an issue with the MAFs or just the IATs part of it... something to check, anyway.
    Getaway in Stockholm 2: Escort Cosworth vs Supra... adults-only driving on YouTube.

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  9. #9
    goldsex's Avatar
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    Never thought of the MAF sensor, then again I don't see how the MAF would clear up after raising the idle XXXX RPM and then the car runs fine afterwards. It's worth a shot to clean out though,

    Try this stuff....

    Resident AEM, K&N and Spectre Performance guy.

  10. #10
    baker of shartmuffinz hyprshart's Avatar
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    Quote Originally Posted by goldsex View Post
    He already replaced it....
    DOH i was half asleep.... yah thats my alibi

  11. #11
    goldsex's Avatar
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    Quote Originally Posted by hyprshart View Post
    DOH i was half asleep.... yah thats my alibi

    I think your smellin what your avatar is cookin'
    Resident AEM, K&N and Spectre Performance guy.

  12. #12
    baker of shartmuffinz hyprshart's Avatar
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    is that what that warm stuff is?? ohh man.......

  13. #13
    I Now Post Stupid **** Jibberish18's Avatar
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    Is the engine flooded with fuel from running rich by any chance?
    "If You Never Had The Bad Times, How Would You Know You Had The Good Times?" -DEATH


  14. #14
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    Flooded with fuel? it reminded me that it feels that if I shift to park and shut the engine down right away, I tend to have more problem. If I let it idle for a few seconds and speed come down, it tends not to have problem. But I didn't pay much attention to this. I'll give it a try this weekend and see if there is really such a difference.

    While looking around the car yesterday, I noticed that the piece of sponge in the air filter box, which covers the fresh air inlet of PCV system, is soaked with some oil and crumbed. So I throw it away, and replaced with another piece of sponge. So far I haven't had problem during the 2 starts today, one going to work and one leaving work. I'll post what I find out this weekend. Thanks.

  15. #15
    goldsex's Avatar
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    Default Re: Ford Focus dies at cold start if not step on gas pedal

    That's the carbon trap, Make sure you replace it with the right parts, a kitchen sponge won't hold up.

    A leaking fuel injector might cause a hard start issue by flooding the cylinder, when you shut the car off and the injector is stuck open it will bleed the fuel presure off into the cylinder. This would more than likely cause a CEL though. And if this is happening you can look forward to an engine rebuild from the fuel washing out the cylinders, Hopefuly this isn't the case.
    Resident AEM, K&N and Spectre Performance guy.


 
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