1997 Ford F150 Regular Cab
Problem for Ford 1997 F150 Regular Cab

Why does our 97 ford f-150 4x4 rev up on rpms to




By mpopikokew on Nov 05, 2009

" "
why does our 97 ford f-150 4x4 rev up on rpms to over 4000 all by itself every few seconds ? then it quits and will run fine again for miles? why?

Solution #1

posted on Nov 05, 2009
Not Rated)

wyatt1582

Rank: Guru 
Rating: 90%, 134 votes
That would be your EGR valve and dpfe sensor. The hoses that connect to the dpfe sensor might need to be replaced or the sensor itself. If the two little blak hoses are bad you will have to get them from a dealer because of the high temp running through the EGR Valve tube. Both control idle speed.
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