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Old 12-19-2011, 08:27 PM   #1
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Default 05 Ranger Edge 3.0L - Rough Idle

Been having a rough idle on my truck for a little while now & can't figure out what is causing it. At higher RPM's & driving it's fine, but when I just sit there it just idles rough.

Replaced: spark plugs, spark plug wires, fuel filter, IAC
Cleaned: MAF sensor, throttle body

Read online that it could maybe be the EGR valve. Where is the EGR located, if it even has one?

Anyone have any insight as to what the problem might be? Thanks
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Old 12-19-2011, 08:33 PM   #2
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If it were the EGR, you would be throwing a check engine code. You may want to try replacing the IAC itself. I had the same issue, cleaned the IAC and it was shot. I bought a new one and idle was fine

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Old 12-19-2011, 08:36 PM   #3
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It has a new IAC already and still the same problem, thanks
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Old 12-19-2011, 08:38 PM   #4
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Ok, how is the coil pack?
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Old 12-19-2011, 08:44 PM   #5
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Haven't checked that yet.. should I?
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Old 12-19-2011, 08:46 PM   #6
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Yes you should...wouldnt hurt
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Old 12-19-2011, 08:47 PM   #7
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Any other ideas, besides the coil pack?
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Old 12-19-2011, 08:47 PM   #8
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Could be an intake or vacuum leak, but you would normally throw a code for that too...
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Old 12-19-2011, 08:48 PM   #9
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Check the air filter as well if you havent already
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Old 12-19-2011, 08:52 PM   #10
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Yeah hasn't thrown a code at Advance, might go to Oreilly's because I hear they have a more advanced machine. I've read that alot of 3.0 rangers have the same problem..
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