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1.7 CDTI Surging/Hunting on Idle

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64K views 31 replies 14 participants last post by  olsenshane17  
#1 ·
wondering if anyone has/had the same issue.
My 1.7 cdti intermittently surges now & then. not always. the slight fluctuation that is is doesn't really point towards the maf.
Ive changed the SCV, Fuel Filter and ran some good fuel cleaner through it.
no faults are present and never any codes stored.
Still the same. driving me nuts
 
Discussion starter · #20 ·
i get 38mpg average, constant stop start driving. used to be 35 but went up a bit after dpf delete & map.
cant see how surging can be normal. my dpf is gone & deleted out of the ecu and still doing it.
but only now & then. reving the car seems to cure it when it starts doing it i have found.