rough idle [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: rough idle


romig
02-14-2009, 07:57 PM
I think i have a weak fprv but not sure my lb7 just seems to idle weird like when its in gear and you start to get on the throttle it is rough but not not to the point that it is noticable to passingers ,it also seems to be louder than other lb7s at idle will a fresh fprv clear this up and make it run smoother.

nmband13
02-14-2009, 09:13 PM
Do you run any additive? If you don't try running a 3x dose and see if it clears up the fpr code. If not, you might as well replace the fpr.

New2Me
02-14-2009, 09:32 PM
When was the last fuel filter change? try a little 2 cycle oil

Brad92
02-14-2009, 09:42 PM
ahhh, the dreaded fpr problem.

romig
02-14-2009, 10:16 PM
yes i run additive it helps but i want to fix it if its a weak fprv yes i change filters often its not really noticable to passengers but i notice it and it bothers me just wanted some input from you that have changed your does it make abig differerance

tinderbox427
02-15-2009, 12:29 AM
My 01 throbs at idle and I dont have alot of take off either. FPR?