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one possibilty is that the mass air flow is getting week, therefore when your climing a hill at high speeds the mass air flow would have a hard time detecting your altitude and therefore not changing the air\feul mixture to the correct ratio.

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โˆ™ 2007-02-03 02:14:43
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Q: What will cause a 1998 Ford Expedition to stall going about 65-70 mph uphill?
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