i am trying to not give up and either sell my lightning or go to the dealer,,,my svs light keeps coming on,,,so i replaced the pcv valve,fuel filter,spark plugs,one coil pack,oil change and cleaned the iac valve,,,it runs better on the highway but still eats gas and idle's rough...i thought it was fine after i last cleared the code then today backing out the driveway it throws that pesky svs light on again,,,so i pull back in hook up my new scan tool and it say p0316 misfire 1st 1000 revs, p0305 misfire detected bank 5, p0171 system to lean bank one,,,, i am tired of dumping money on the wrong parts please help me someone,, the plug did have a cracked tip in bank 5 why is it still throwing that code if i replaced it and the coil pack,,,fuel injector?,,,,,,please help me someone

 

has it been on a dino with a wide range A/F sensor. if not that is what you need to do.

 

dyno my spellimg is off

 

no it has not will that tell me more specificly what is wrong and were do i find one of those,,,,do i really need to spend all that money i should be able to figure it out myself right

 

5of1wrench: Your trouble may be a bad intake seal. Have had problem with coolant getting into runners. Also, may be a bad plug boot. Does your scanner show misfire data? You can usually catch the culprit in the act if you have that capability. Hope this helps.