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Old 07-11-2012, 07:57 PM   #1
GotVANOS?
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Join Date: Mar 2012
Location: Chesapeake Virginia
Posts: 324
My Ride: 2003 325xi Touring
EGR symptoms?

Recently my 325 has developed some odd symptoms. When Iím cruising and I let off the throttle to coast then re-apply the throttle, it will hesitate for a couple seconds (2 or 3) between 1200rpm and 2000rpm. While accelerating from a stop it doesnít hesitate at all, only does it when Iím coasting. Itís a small problem but itís annoying as FK! At first I was just getting codes for bank 1 and 2 running lean and I just thought it was the o2s going bad but obviously not. Possibly the EGR? DISA wouldnít have anything to do with it? What do you guys think?
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Old 07-11-2012, 09:35 PM   #2
jfoj
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Join Date: Nov 2009
Location: Fairfax, VA USA
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My Ride: '06 330CiC, '03 M5
Suggest you check the first link below in my signature.

It will cover most reasons you will be getting lean codes.

Also keep in mind the car usually shuts the fuel injectors off in coast mode as I recall, so there may at times be a slight hesitation when getting back on the throttle.

ICV may also be an item to consider, but you really need to work through the basics and get any and all vacuum leaks resolved.

The DISA could contribute as well.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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disa valve, egr, egr valve, m54, vanos

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