Problems - Missing/backfire

[hegsy]

Ive got a skyline r32.. it idles really disgustingly at times during idle it will also shut its self off, when driving going down gears it'll literally drop to 0 rpm + the whole car turns itself off..

Checked

TPS

AFM

No vac or boost leaks

[Sinista32]

CAS

Fuel - Pump/Reg/Filter

Plugs

Coilpacks

Edited December 12, 2013 by Sinista32

[GH05T]

sooo many topics on this

[hegsy]

Could it possibly be the alternator?

[Ben C34]

Check the normal stuff first. Atmo bov? get rid of it. search.

[533 RYC]

+1 ^

Go through all the usual stuff first, just make sure everything goes back as you found it after testing if there's no fault found.

Is it hard to start (e.g. turn the key & nothing happens of cranks fine at normal speed every time)?