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International Automotive Technicians Network
Re: Older F.I. fords and intermittant rich conditions
Posted to Emissions Forum on 7/14/2003

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We had a 88 Ranger pick-up 2.9L that was very similar. It was very clean and all of sudden went pig rich with O2 matching the rich condition with a .85-.9 volts. Fuel pressure never waviered. ECM grou... Login to read more.