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Weird AFR Readings

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Old Apr 2, 2013 | 06:15 PM
  #1  
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From: Midwest (In EvoM, its SW lol)
Weird AFR Readings

...during idle. This is from a semi-warm start.


Outside temp is around 45 degree. I've read AFR at idle should be around14.7-15ish. As you can see, mine sometime dips into the 16-17s. Is this typical? I have regular bolt ons and no engine mods. This was happening before installing larger injectors.

Thanks.
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Old Apr 2, 2013 | 08:31 PM
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Ok, found out it can be the EGR solenoid gone bad. I read it is underneath the intake manifold. So I'm assuming on the side towards the firewall. What's the best way of getting to it? Do I need to go from underneath the car?
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Old Apr 3, 2013 | 06:28 AM
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i have the same afr.your cel is on?mine not.
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Old Apr 3, 2013 | 09:11 AM
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Originally Posted by egis
i have the same afr.your cel is on?mine not.
No CEL. No cams either but the car sounds/idle like I have cams lol. From all my research, its either a boost leak or EGR issue. I'm getting a boost leak test next week, so we'll see..
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Old Apr 3, 2013 | 04:16 PM
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i did boost leak check and i don't have one.so it leads me to egr.this sat i leave my car at boostin performance for fluids change and ask them to take a look.
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Old Apr 3, 2013 | 04:20 PM
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btw before you start taking off the egr check that stupid vacuum line that likes to popping off of the nipple.
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