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SVT Performance (2002-2004) The place to chat about any 2.0L SVT DOHC Zetec engine performance, tuning and exhaust related upgrades.

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Old 05-06-2008, 10:39 PM   #1
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Stumble Question

I have this weird stumble when my car is idling usually until it gets a good warm up. The RPMS will hang at like 1200 for about 5 mins when i start the car and then drop to normal. When i am sitting at a light sometimes my RPMS will raise and fall from like 700-1200 and back. Any ideas? Ive already done PCV, Oil and filter, Fuel filter, Plugs and wires (motorcraft). Is this common on the SVT? If not what could it be. Also if it is common does a Diablo Tune Help fix idle at all?


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Old 05-06-2008, 11:51 PM   #2
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What year is it? Some SVT's I have heard had this problem and it was some issue with the ford factory tune and they got it retuned by ford.
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Old 05-07-2008, 08:10 AM   #3
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that does sound like the ZED0 tune.
again, what year is your SVTF?
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Old 05-07-2008, 08:20 AM   #4
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Funny his tag says he drives a 2000 zx3
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Old 05-07-2008, 12:05 PM   #5
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Funny his tag says he drives a 2000 zx3
Why would he be posting in the SVT section?
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Old 05-07-2008, 10:25 PM   #6
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Sorry thats my old tag. Its a 2003 comp orange SVT. Ill check tomorow at ford to see if i need a retune on my engine. Thanks
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Old 05-08-2008, 08:55 PM   #7
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Oddly enuff I have the exact same problem. I have an 04' SVT. I actually let mine warm up for a few minutes. When you find the answer let me know!
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Old 06-13-2008, 02:07 PM   #8
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Any word on what you found out there cheif?
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