rough idle

[yukongirl]

I have a 98 yukon 5.7l vortec v8. I have changed plugs wires cap n rotor. Still have hella rough idle wants to bog down when I take off from a stop
Ses light flashes when I hit 35 mph. I am also gettin a random backfire. Any help is apperciated y'all.

 

[Yukon96]

The Idle Air Control valve, and/or Throttle position sensor are just a couple of things that can cause this issue. Any codes to speak of? You can have it checked for codes at Auto Zone, or most other auto parts stores of your choosing. Good luck.

 

[yukongirl]

Had a p0300 and bad maf sensor. Repleaced the maf and did cam shaft position sensor. None correct it. I am still gettin the code p0300. What can b causing this..

 

[SunlitComet]

get use of or help with a scanner that can read misfire history please.