4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Car runs rough at idle

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Old 12-28-2009, 09:14 AM
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DreamerGT
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Default Car runs rough at idle

This is the code I get. P0352 Ignition Coil Primary B / Secondary Circuit Malfunction, all the cops are new about 8 months old and the spark plugs were replaced a year ago. I starts fine, its when its idling at a stop light or whatever it will go rough. But when I start driving it will drive rough for a little bit, then snap out of it and drive fine and have full power again. I changed the plug and coil and it still does it. Any idea's? thanks
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Old 12-28-2009, 12:06 PM
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blackstang14
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I had the same problem but I was throwing lean codes. I replaced 2 oxygen sensors as their signals were low and that fixed the problem. It now idles smooth as silk.
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Old 12-28-2009, 12:42 PM
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I know some o2 senors codes were stored in computer, Ill check it out.
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Old 12-28-2009, 09:26 PM
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any other ideas?
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