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: replaced egr and bpt, no change Fonque 07-02-2002, 11:10 AM This past weekend i replaced my egr and bpt valve, thinkin that was the cause of the surge and hesitation i have been getting at low rpm's like around 1500 - 2000. Well after i replaced them and cleaned out the tubes with cleaner. Fired it up, and no change at all. still the same surge and hesitation. what could it be? Shoes59 07-02-2002, 11:50 AM Originally posted by Fonque Fired it up, and no change at all. still the same surge and hesitation. what could it be? When is the last time you changed your O2 sensor? Fonque 07-02-2002, 01:57 PM thats next on my list after i replace my motor mounts. could the o2 sensor really be the cause of all that? would a bad o2 sensor cause a failed emissions test? | ||