Max Power
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- Nov 28, 2003
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I have 2 friends that have both 99 cummins. Both have had Edge EZ boxes for quite some time. Today both of them called me to tell me they were having problems. What a coincidence. Both run find untill they get up to highway speed then they buck and surge (their description). One of them is 3000 miles from home so he took it to the dealer to get them to look at it. He left the EZ box on so the dealer removed it and all was fine. So he is on the road again. Apparantly they never looked any further. So does this sound like the symptoms of a bad lift pump? If so, can anyone recommend guages and a procedure for installing pressure guages? I am a cummins newbie and now I have to learn.