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03 6.0 Surging

1K views 3 replies 3 participants last post by  Clay Henry 
#1 ·
I just got my truck back from the shop and now every once in a while at idle it will surge like someone stabbing the throttle. It idles about 700rpm and revs to about 1000 real fast and right back down. Any Idea? It was in the shop for a loss of pressure from the HPOP because of a damaged pipe and O-ring coming from the pump.
 
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