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Honda civic 2011 102k kms. Im having idle rpm drop on cold start ONLY when putting load on the engine while on Drive gear automatic. Rpm drops to 500-600. I have scanned and my Short term fuel trim is reading at around -8- to -14.7 ehich is running rich. I have changed sparkplugs, fuel filter, valve adjusted, throttle cleaned, maf cleaned, egr valve cleaned.

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You may benefit from cleaning the fuel injectors.

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