EvolutionM - Mitsubishi Lancer and Lancer Evolution Community - P0171

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RaiNFaLL

Jan 7, 2009 07:50 PM

P0171 - System To Lean

so ive been having idle issues as of late when i installed the intake manifold and the throttle body .
today i get cel , and system is to lean.

urgh. any suggestions.. im starting to get a little frustrated.

mcgarvey

Jan 10, 2009 02:19 PM

Check for vacuum leaks. Also make sure the MAP sensor is reading manifold vacuum. Also try cleaning your MAF sensor. The idle issue definitely sounds like a vacuum leak. Is the idle too high?

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