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: Fuel pressure cause lope @ idle?? blizzardplowman 07-12-2004, 12:00 AM My 01 DMAX has developed a 3/4 cam type lope at idle, Is this a fuel pressue issue and is there a TSB, truck has 47k and I just changed filter About 2 weeks ago, but the lope started today, checked if filter was tight and all appears fine. Mackin 07-12-2004, 06:38 AM Yes and Yes .... There is a ECM flash that will some what correct the lop but eventually you will need a Frpcv .... A good additive will mask the lop also ....Mine has been bad lately and I'm considering changing soon once I find a decent price on one ... Mac blizzardplowman 07-12-2004, 01:13 PM Went to dealer today, checked it out w/ Tech2. Ordered a new FUEL pump and regulator. High side was in range but low side was't even close and would not hold command pressure. Glad it's under the 100k warranty! blizzardplowman 07-21-2004, 11:47 AM Got the truck back from the dealer today- Much smoother and no LOPE! | ||