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Old 08-02-2002, 05:17 PM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Should be for the life of the car unless the car was HIT in the left fender!! Never replaced one for any other reason!!
YES disconnect the line at the check valve & block off while checking the duty cycle.

AS long as you have a good duty cycle at idle & at 2500 the car will give you as good performance as it would if they were excatly the same reading.
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