My 06 has been acting up for awhile. Last year after fixing the heat exchanger I had a bad problem with water in fuel from condensation, a stuck injector for a bit. Got the water out ran it till now.
Now, under acceleration at higher rpms usually with
tc unlocked, rpms will go down then back up, sometimes lose power completely for a split second. Will occasionally notice it with
tc locked. Seems to happen more when the engines cold and when its cold out. Under
wot tonight in 3rd gear noticed it sputtering at high rpm. Haven't got a low rail pressure code yet.
It has 205k on the stock injection pump. I changed the fuel filter too see if that was it a while back.
It starts fine but idles rough for few seconds at startup.
