Jump to content
SAU Community

Please Help Me With Missfire Prob It Only Happens When Under Load I Cant Work It Out Checked Everything


Recommended Posts

hey guys this is really frustrating has anyone had this prob before , when it sits still it revs out but when under load on the road it just breaks down , i have put brand new coil packs in , changed the plugs for the 2nd time in one week that didnt fix it i got em gapped at .7 i checked all the loom wirng voltages earths cant track it down like i said when it sits still it revs out but when on road it just breaks down

im desparate for help if anyone could please help me out would be much appriciated .

dan.

afm mate. mine was doing the same thing, somtimes it would have no throtle at all and just stop. i would wind the engine over and it would fire but wouldnt run.

other times it wouldnt rev over 2 2.5 grand. it would just bounce there violently my tuner and i pulled it apart and fixed it . or u could just replace.

but that is were ide be starting.

there is an earth on the fire wall for the coils check that. check them all. iwould seriosly try afm first but. unplug it and plug it back in thats what i did to mine and it would work for a while anyway. if it runs the same with it disconected thats probably the prob. they wont rev past 2.5 rpm disconected

If the AFM is the problem (which is what i suspect to be the problem with my car too) does the car run super lean when it loses it's throttle while still revving and also when it missfires?

I've got a forged built bottom end and don't want to do any damage to it.

Thanks

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Latest Posts

    • Selling a SMIC for a Nissan Stagea C34 Series 2 and the pipe from the intercooler to inlet. (I believe it is the same R34 GTT, please correct me if I'm wrong) Price: $50? I dont have a photo of the big black pipe that goes from SMIC outlet to throttle body.
    • So the original radiator is leaking now. Looking at getting a fully aluminium one next. Am I correct in saying that the Series 2 Auto Stageas have a separate trans cooler from factory (located in between the rad and intercooler in my previous post/message).   Currently looking at Fenix $460, Blitz $700, GReddy $800, and KoyoRad $740. What are everyones thought on Fenix ( ive read a few comments saying theyre cheap Chinese rebrands etc and how their build quality is... well.. chinese...)  compared to the others? Worth the extra couple hundies?
    • Man, different parts but the same numbers is terrible @dbm7! And it doesn't help that most online shops don't list the part numbers at all. They just give a list of compatible models...
    • Slow when hot could also be because its getting more dynamic compression, OR things are getting a bit tighter once it is all expanded. If it were an earthing issue, typically I'd expect you to have it have issues all the time. Unless it's really a combination of both things. Where the higher compression, and things being a bit tighter, is giving that bit of extra load and you do need a slight clean up on the cables/connections.
×
×
  • Create New...