My Car Just Runs Like Shit All Help Is Appreciated

[08yannch]

hay i just left home to day to get a oil filter so i could change my oil and 2min's in to driving the car just started to run like shit missing cylinders all over the place and there was a lot of traffic so i just kept on going got the part and headed home and i tried keeping the revs low and that didn't work so i kept the revs high but not stupid between 3g and 4g and the problem went away. but i think that the ecu could be dumping fuel in to the motor and i think that makes sense because why else would it run fine in high revs. also my fuel economy was shit in low and high rpm

so i think i know what the problem is and now how do i fix it. need help asap because im going down to be racing my car next week

my car is a nissan skyline r33 gtst s2 auto

i was shitting my self there was a cop like 2 cars back almost all the was home and im seating on 1st and 2nd omg very lucky

[08yannch]

i just cleaned my AFM with some AFM cleaner it cost like $25 biggest rip off

the car still runs like shit

i have to go to work now will be back working on the car in 5hr

[Craved]

check your cooler piping

[08yannch]

i checked the spark-plug's and there fine

[08yannch]

i have checked all of my cooler piping taken it all apart and put it back 2gether and it still runs bad

i now think that the amf is sending the wrong signal or the ecu is sending the wrong signal

does any body know how to check that amf 2 see if it is working without trying somebody else amf because i dont know any body with a skyline

also how to reset the ecu and could this fix the problem ??

and any other ideas for trouble shooting would be much appreciated

[The Bogan]

Disconect your battery for about 1 hr, should do it.

[Shaun O]

Don't even need an hour, just unplug battery, stamp on the brakes, turn on your lights, etc, to fully drain power and hook it back up again

[DECIM8]

o2 sensor, AFM and air leaks! good work on changing the plugs!

[Guilt-Toy]

ask a friend if you can borrow his AFM to test. thats the best way to check it.

good luck. sucks when your skyline acts up. doh!

[08yannch]

well it is 100% not the AMF

and i reset the ecu and still no luck

[08yannch]

im 90% that it is the o2 sensor that is shitting it self so i think i will replace that

because it runs the same when it is plugged in and when it is un plugged

also if u see a skyline in WA that sounds like it is about to die it is me

and the cops in WA ant 2 bad because i haven been puled over even with all of the engine problems

[Guilt-Toy]

if you keep guessing what the issue is like this then we might as well lock this topic and forget it.

Why ask for help when your not prepared to do what we say ?

Try another AFM. then move on from there!!!!

[blind_elk]

im 90% that it is the o2 sensor that is shitting it self so i think i will replace that

because it runs the same when it is plugged in and when it is un plugged

cocky's! Why does everyone think that the O2 sensor is the be all and end all of problems with the way an engine runs? If you have a dud plug, for example, the O2 sensor, plugged in or not, isn't going to make a scrap of difference to how the engine runs.

[08yannch]

i did replace the o2 sensor and the car still ran the same

i have no idea why my car ran the same with the o2 sensor in and when it was out with (the old one)

and then i went back 2 the spark-plugs i pulled them all out again and the one 3ed from the front was pissing out some milky crap and so i checked the oil and the coolant to see if it was a head gasket all clear and no other spark-plugs had this problem so i swapped the shit spark plug out for a old one that i know works until i have a chance to go out and get a new set because i have had it with these platinum ones im going to copper plugs.

well any why the car runs real good with the shit spark plug out maybe even better probs because of the o2

o and by the way "Guilt-Toy" i dont know any body with a amf so how do i test it what go and buy one. not every body has $$$ to throw around

and "blind_elk" u were 100% on the money but the car does run good with a new o2 no stuttering when i am idling so not a complete wast of time

thx for the help everybody i will post pix of the dud plug some time 2day

[08yannch]

this is a pic of the dud plug