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Old 05-20-2013, 12:11 PM   #1
Stitch518
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2002 zx3 rpm drops and it turns off

Hey everyone just need some fresh ideas im really confused here i have a 2002 focus zx3 starts up fine everytime drives great except when i slow down it drops rpm too low and turns off whether im at a light or slowing to make a turn or what ever the reason is that i slow down it drops rpm then shuts off does anyone have any ideas at all it would be much appreiciated thank you very much!


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Old 05-20-2013, 06:15 PM   #2
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Do you have a way to check codes? If not, you should be able to go to a local parts store, and they can read the codes for you. That way we can tell if you have a bad sensor somewhere. If you dont, then you might need to check for vacuum leaks.
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Old 05-20-2013, 07:05 PM   #3
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Manifold pcv hose, IAC, TPS.
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Old 05-20-2013, 09:09 PM   #4
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Quote:
Originally Posted by amc49 View Post
Manifold pcv hose, IAC, TPS.
amc49 beat me to it. Definitely check these. I would think mostly the IAC. Here are what the acronyms mean if you don't know. IAC (Idle Air Control sensor/valve). TPS (Throttle Positioning Sensor)
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Old 05-21-2013, 12:40 PM   #5
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Moved to "General Technical Chat".
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Old 05-21-2013, 12:56 PM   #6
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...oh, and welcome to the forum!

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Old 05-23-2013, 01:18 PM   #7
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amc's post, and make sure you run out all the fuel you have in there now down to below 'E' and refill at a different gas station with 87 ONLY. Some people try and use 89 or 93, but your car will not idle very well (or at all) with higher octane fuels so it will exhibit this exact problem if you have anything higher than 87 in it as all foci (exc. SVT and F.I.'d) are tuned for 87. Or, depending on your mileage, you could have a clogged fuel filter or fuel screen inside the tank on the pump. Did you ever get the original pump replaced on recall? My original failed at 108k. Also I have heard of places that sell their higher octanes as 87 when they run out of it. You coulda possibly got gas at one of those places pulling a sneaky one to keep selling fuel when they run out of 87!
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