erratic idle

04oxfordvert

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May 3, 2011
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705
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canada
hey guys need some suggestions. car just today started running horrible at idle. either rough or dies. runs just fine at highway cruising. agr around 14.7 im not getting into boost at all and havent at all. just moving. i cant data log as my laptop is not with me. but my fpdc is around 40% at idle with 40 psi fuel pressure but at idle mg afr goes way lean. any ideas?

Sent from my SM-G965W using the svtperformance.com mobile app
 

hotcobra03

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Mar 11, 2007
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7,469
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poteet,texas
I would look over pcv line.

The elbows are an issue with holes and soften where vacuum will squeeze them closed
 

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