Focus Fanatics - View Single Post - 2012 Focus - Rough Idle
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Old 10-19-2012, 09:27 AM   #57
TboneZX3
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Join Date: Oct 2011
Fan#: 90494
Location: Jackson, MO
What I Drive: '12 SE Sport, '01 ZX3, '67 Bronco

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Quote:
Originally Posted by tjbischoff View Post
All I can say is that the car used to idle evenly at about 700rpm. Now it will idle there and then dip 200rpm for a second or two speed up to 750-800 then settle back down for 10-30 seconds and repeat. THIS IS NOT NORMAL.
You're right--that's not normal. I thought you were just referring to rough idle, not RPM fluctuation. I have noticed some fluctuation in mine at higher altitudes (7000ft+), but that obviously shouldn't affect you in the midwest.
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