po 300 code help

[Ramsey]

ok so far no luck ive changed maf ,plug wires,plugs.no go .i put denso platinums in and gapped them at 40.sound right?now on the inj wires.wich is a + on each ?looks like if im not mistaken the ground is the one with the black stripe on each one ,is that correct?im gonna try to stick a regular test light in each pos to make sure theyres power cus i dont have an ohm meter ,will that be ok just to check for power?this is getting costly just for a stupid code that could be so many things.

[Ramsey]

ok update lol .changed coils ,no help.lol wth.checked all inj plugs for power with test ligh and they all had power.sprayed all over the motor with cleaner and couldnt find any vaccuum leake.no plug wires glowing in the dark.im stumped.im thinking about putting the factory air box and intake tube on to see what happens.o 1 more thing how should the pvc work or how do you know if ones bad.whe i put my finger over it it sucks it in.shot in the dark but not sure how the pvc is supposed to function.if you pull it off or leave on u know.whats the deal with them cus it seemed like it ran better with my finger over it.thanks .

[Ramsey]

pcv valve for some odd reason helped it run better but no go.im about out of ideas .is there anything internal thatll cause a random multiple mis ?po300.i get 2 po300s at a time everytime it does it.wen the a/c is on and im drivin ,i can feel it like a spark plug hitting and missing.now im getting aggravated.i also put a new tps sensor and air box and intake and maf off the esky.im losing it here now.shot in the dark here but my tranny guy said if i hook up my speed sensors wrong ill throw a code ,would this be a code it would throw?idk,just sayin.

[Ramsey]

whatever happened to gassguzzler ?he was good at this stuff.

[Ramsey]

hey guys im reading all over and some people are saying any cam just about will throw a po300 code .is this true.and that the misfire perameters need tro be set higher.im not feeling it alot and i feel it could be the cam.its just alittle shaky in gear at idle,wen it pops the code.i do feel it alittle more with a/c on.like a bad plug.but i could be looking too hard.ya know .some are saying that low idle will cause it.turn up the idle 500 rpm could fix it?it does do it wen the idle comes down.aaaalllleen what do ya think bud?

[Ramsey]

allen did u take the weekend off?were r u ?lol .

[Ramsey]

come oooooooooooon.jeeesh i have to drive this thing ,man.could aaaaanyone help me here .with the tune questions or about the cam throwing the code .or turning up the misfire perameters.what about a crankshaft sensor,or camshaft sensor?idk i just want this POS to run normal this is exactly y i demodded so i didnt have to work on it all the time.i ready to smash it in a tree if it doesnt get fixed.im stumped and dont know what to do.when it idles to long the code comes on as soon as the idle gets low after 5 mins .so i dont know if its losing the cylinder and lowereing idle or what im soooooo sick of this.and cant get any answers,ive tried and tried on my own.

[96/chevy/pu]

My 96 used to do the same thing at idle after so long with ZZ4 cam, it ran great but after idling so long it would set the same code at idle, so if it runs fine just turn off the code, if don't ou need to see what cylinders are showing a misfire with a scan tool and go from there. I also showed this code on my 01 pu after putting in my LS1 I copied over all the fuel tables for a LS1 and flashed my computer, except for the MAF which was used the orignal off my truck. Code 300 would always come up around 80 mph, so after looking at info on scanner I decided that program was lean so I used the program off the camaro as far as programming go, it was to rich according to scanner at low speed so I blended it in program on the MAF tables and no more code 300, trims are closer now and no codes, hopr this helps.

BB

BB

[farmtruc]

you're gonna have to ohm out the wires to ensure there is connectivity. ohm each wire at the terminal, don't just poke through the wire plastic covering, becuase the terminal could have a cold joint.
you're feeling a physical misfire, it has to be an inj, plug, coil, and dealing with wiring, or at least that is the first place i'd start.
the lean code, well it might have something to do with the misfire, or there is a bad o2 on that side or an exhaust leak.

it's gotta be wiring, at least that is a very good place to start.

[pl4yboy]

Bet it's a wire.