Engine runs really rough. HELP PLEASE!
02-11-2012, 12:54 AM
#11
Originally Posted by St.Somewhere
Same problem, but my rough idle comes and goes and no check engine light on. All the sevice is up to date also. Mine started to idle rough today and i put it in neutral and reved the engine and it smoothed out afterwards.Truck runs great and has plenty of power and good fuel mileage. Any advice anyone can give would greatly be appreceited. The last thing i want to do is nickle and dime my bank account..
02-11-2012, 07:55 PM
#13
Just another white truck
Join Date: Feb 2012
Location: Englewood, Tn
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When the truck starts missing, it almost sounds like spark knock like when u shut the engine and and try's to keep running with the switch off (puttering sound). Best way to describe it is like an old carburetor engine sputtering on 2 cylinders. Any takers on an diagnosis??? Please
02-12-2012, 08:47 AM
#15
Originally Posted by rydered
FPDM could be going dead! Check it out by your spare tire! Worth a shot, take it down and if there is holes in it then it's shot
02-12-2012, 10:53 AM
#16
Senior Member
Fuel pump driver module. It's right where the spare tire is on the frame. Drop the spare tire and it's almost directly under the bed next to the driver rear tire. Can't miss it. One wire harness and 2 bolts. Take it off, if there's holes in the back or corroded then it's bad. Here was mine.