I'm stumped!
#1
I'm stumped!
OK fellas....here I come yet again scratching my head.I got a '05 Sporty 5.7 Hemi throwing a 0300 code.I switched out the plugs and wires.I don't think I have a burnt valve since I can feel no vaccum from either exhaust tip.Where to go/what to do now.I'm thinking it may be an O2 sensor but which one? I don't want to just guess and waste time and money.Any help or ideas as always are appreciated.
#4
#5
I'm assuming an overlay is where the wires run under the air intake on the top end of the engine.When I did the wires,I did them one at a time to make sure they all got the right routing and went exactly where they were suppose to.That way they wouldn't be sitting on top of something they weren't suppose to be and/or possibly arcing out either.My biggest problem with this whole thing is that the truck might not do this for another 2 months and then again it might happen tomorrow.Yesterday I took off the air intake and cleaned out my throttle body real good.It wasn't too awful.I've seen worse but I did it basically just to eliminate that as a possibility.I very well may have a bad computer too.I bought this truck from a dealership with 35K on it a few years ago so I don't know its history.I've also thought that maybe someone before me had the computer flashed and maybe the dealer reset it too OEM and that might be having an effect on it.I think if the 'puter was bad I would have a whole host of other problems too though.
#6
#7
Thats a good idea.It never crossed my mind.The most irritating part outside of the fact that it's such a wide range of things that cause the random misfire is my truck might not misfire again for another couple months or more.It occurs very infrequently.When it does,I can stomp the gas and it just quits.(vaccum leak possibly?) Normally you can't even feel the thing runnin' while your in it though.
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