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Old 03-02-2010, 04:49 PM   #5 (permalink)
comptiger5000
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Join Date: Feb 2010
Location: CT, USA
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RaceJeep - '98 Jeep Grand Cherokee (ZJ) 5.9 Limited
90 day: 13.62 mpg (US)
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Busypaws - That depends on whether or not the car uses a return type fuel system. Not all do. Some use a variable speed pump (or a pressure switch and regulator) that only feeds as much fuel is needed. Therefore, during DFCO, these systems would turn the pump off, as no fuel is required.
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