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DURATEC Performance (2003-2007) The place to chat about any Duratec 23, 23E, and 20 engine performance, tuning and exhaust related upgrades.

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Old 10-13-2012, 03:07 PM   #1
jeanlucsperry
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New Focus ZX3!

Hey guys i just bought a focus ZX3 with the 2.3l duratec it has some issues but got a good deal on it so i cant complain the first question i have for you guys is that upon start up the car will start good and then rev upto about 2750 rpms the guy i bought it from said it just started doing it one day and he never looked into it so i was just curious if that could possibly be because of the idle air control valve? if you guys have any other ideas please let me know thanks


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Old 10-13-2012, 10:31 PM   #2
GreySkorpion
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I would pull the IAC and clean it with Gunk foaming degreaser. I have a 2004 ZX5 with the 2.3 and its super easy to do.

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Old 10-13-2012, 11:00 PM   #3
streetfocus
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Sweet. I should have gone out of state to grab a 2.3L.
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Old 10-13-2012, 11:02 PM   #4
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The 2.3 is a MONSTER. Lots of torque, takes well to bolt on's like exhaust and intake.
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Old 10-13-2012, 11:16 PM   #5
Team Illusion
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also check throttle position sensor. also advance auto parts will plug up to it and give you a error report for free. Hope to hear it is a easy fix.
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Old 10-16-2012, 07:44 PM   #6
jeanlucsperry
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Thanks for the ideas guys i will try to clean the IAC and if that does not work i will look into the throttle positioning sensor i will keep you guys updated
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