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Re: Surging under load, fuel pressure drop
Posted to Technical Discussion Forum on 2/5/2014 2 Replies

W 2009 Ford E-350 Super Duty, Fuel Supply Waveform 2010 Ford E-350 Super Duty, Fuel Supply Waveform Well, swapped out the Maf and AP quickly, still same... Fuel trims -20 on idle and she was smoky on cold start up, had to feather the throttle to get started..... Login to read more.

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