Ryan Moilanen
Newbie
hello everyone.. I have a 1998 Chevy Silverado k1500 with a 5.7... I am experiencing problems when ever my truck is warmed up it will idle weird when I start it back up again it will go to 800 rpm down to 300 rpm back and forth until I drop it into drive or reverse... also I can feel it stutter when ever I floor it sometimes.. I have no CEL or anything any suggestions? I've cleaned MAF,IAC,throttle body I was thinking an o2 sensor but it would of came up on my code reader if something was off. I've also done a full tune up a few months ago, new fuel filter, upgraded fuel injectors, new fuel pump 2 yrs ago. Any help would be appreciated thanks for reading !