hello
I drove my truck to the service station today for unleaded fuel but when i drove away my truck idles at 400 rpm instead of 600 rpm and it stutters and when i hit the pedal it drives good but at idle it almost want to quit . i thougt the guy at the service has put diesel in my truck so i called them and they look at the security tape and told my they put in unleaded fuel . i also can smell the gasoline fume whet i start the vehicle . also when i start my truck it pulls a lot of vacuum from the airfilter and my engine almost want to stall . i also put my scan tool on it and it say that one o2 sensor p0135 . is bad . i have put another ignition coil on the truck and it still does the same i also put in another new pcv valve and still the same i also have new spark plugs . distributor cap and ignition wires are also ok . what else can i check camshaft sensor crankshaft sensor or tps iac or mapsensor . Also when i hit the gas you here it shoot like a ak-47 i think that is called a misfire . my truck is my daily driver and i really could use some advice maybe i can fix it before monday for my work . i also read my haynes trouble shooting . could it be fuel pump. the fuel pump pressure needs to be 45 psi is this correct ? it all started when i drove away from the service station . i do have a spare 5.2 magnum with all the sensors but i dont have a spare fuel pump.
Many thanks in advance