Andrew, o2 sensor should compensate for the higher elevation. I would suggest you take the time to do a pressure test of each cylinder while you replace the plugs. May be informative. gary Date: Mon, 8 Jul 2002 09:34:11 -0600 From: Andrew Fox <afox@CNR.COLOSTATE.EDU> Subject: High elevation adjustments? I routinely drive my van at elevations ranging from 5,000-14,000 feet here in Colorado. Above about 8,000 feet i experience loss of power such that I am only able to maintain about 30 mph while keeping the engine floored in second gear. I know its a crime but i routinely drive my van with my foot to the floor for a half hour or longer while going uphill in second gear (auto tranny). So my question is are there any adjustments I can make to have a better high elevation driving experience? Any Colorado listees out there that can tell me if they get better or worse performance on some of Colorado's steep/high highways (ie I-70)? Going east up to the eisenhower tunnel on I-70 my max speed is about 30 MPH (second gear, foot to the floor, 2.1L, AT). Thanks, Andrew Fox 86 Westy Ft. Collins CO
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