rickyrick562 Posted January 21, 2014 Report Share Posted January 21, 2014 Okay truck was throwing a p0420 code so I replaced the cat. But it still feels very sluggish. Also when I start the truck it revs to like 2k+ rpms then idles normally. Also shifting very hard but I believe that's the trans on its way out. Any input Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted January 21, 2014 Report Share Posted January 21, 2014 It could also be a 02 code. Here ya go. http://www.obd-codes.com/p0420 Quote Link to comment Share on other sites More sharing options...
Aldofashow Posted January 21, 2014 Report Share Posted January 21, 2014 If bank 1 o2 gos bad it will fall flat on its face and run like crap Quote Link to comment Share on other sites More sharing options...
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