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Help P 2187 Lean at Idle Code

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Old 09-27-2012, 04:27 PM
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Question Help P 2187 Lean at Idle Code

Ok so i am having a problem with this P 2187 lean at idle code. It will trip the engine light on start up only, never while driving. Also this code wont come on every time i start my cobalt. I clear the code and it will come back on after like 5-10 start ups. Please help i cant figure out what this is from and my tune shop seems to be no help either.

Performance Mods: 08 TC with zzp upper and lower charge piping with MAF relocate, Injen cai, tial Q bov, zzp catless downpipe, dyno tuned via hp tuners 25psi of boost

The tune shop says that the code is accruing due to the tial Q but i already changed the spring to a much stronger one to hold the boost im running.
Old 09-27-2012, 04:29 PM
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Originally Posted by GotBoost08
Ok so i am having a problem with this P 2187 lean at idle code. It will trip the engine light on start up only, never while driving. Also this code wont come on every time i start my cobalt. I clear the code and it will come back on after like 5-10 start ups. Please help i cant figure out what this is from and my tune shop seems to be no help either.

Performance Mods: 08 TC with zzp upper and lower charge piping with MAF relocate, Injen cai, tial Q bov, zzp catless downpipe, dyno tuned via hp tuners 25psi of boost

The tune shop says that the code is accruing due to the tial Q but i already changed the spring to a much stronger one to hold the boost im running.
What are your fuel trims?
Old 09-27-2012, 06:34 PM
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i had this issue a while back, dealer replaced HPFP and it went away but then came back..then they replaced the PCV valve or whatever its called and its been fine since
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