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slides slides is offline
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Default hesitation at idle - 05-17-2017, 02:18 PM

i have a 07 335i with 58k on it. Just did plugs and walnut blast but still have a hiccup at idle and around 1800 rpm with light throttle in traffic. Car performs fine under WOT but this hiccup at idle is annoying. It idles around 600 or slightly below and will occasionally go up to 800.

Part of me is thinking its the coils but haven't had any check engine lights yet. Has anyone else experienced similar issues?
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I6+TT=FTW's Avatar
I6+TT=FTW I6+TT=FTW is offline
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Default 05-18-2017, 07:42 AM

Quote:
Originally Posted by slides
i have a 07 335i with 58k on it. Just did plugs and walnut blast but still have a hiccup at idle and around 1800 rpm with light throttle in traffic. Car performs fine under WOT but this hiccup at idle is annoying. It idles around 600 or slightly below and will occasionally go up to 800.

Part of me is thinking its the coils but haven't had any check engine lights yet. Has anyone else experienced similar issues?
Sounds like a leaky injector. Log your afr for both banks and see what happens when you let off the gas. If one bank is considerably slower to reach 234, then an injector on that bank is most likely leaking.


2007 Jet Black E90 335xi /PTF-Cobb/E50/FuelitS2/5" Stepped FMIC/Synapse BOV and Charge Pipe/Black 19x8.5/245s all around/and more
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natedog7700 natedog7700 is offline
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Default 05-18-2017, 10:30 AM

Quote:
Originally Posted by I6+TT=FTW
Sounds like a leaky injector. Log your afr for both banks and see what happens when you let off the gas. If one bank is considerably slower to reach 234, then an injector on that bank is most likely leaking.
+1, log your car so we can see whats going on. Most likely going to be bad coils, injectors, or pre *** O2's.


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