Strange Problem With My R33 Gtr

[Deziner]

I had this happen last spring a couple of times and then it just stopped; it has now started again.

Basically as I am driving (whether just starting in 1st or 2nd or cruising in 4th or 5th) the car starts to stop, then surge, stop, surge etc.

It feels like there is a complete loss of power to the engine, but there isn't because it is still running. I.e. if I pull over it is idling fine. Occasionally the 4WD light comes on when this happens, but not all the time.

When this happened last year I thought maybe dirty AFM's or dirty fuel. I initially thought AFM's as there was a heap of pollen around the first time it started happening. But this wouldn't account for the 4WD light I don't think.

Maybe an electrical issue with the ATTESSA?

It's odd though because I can still have my foot in the same position on the accelerator and power cuts, then surges back on.

Any thoughts?

[Moodles2]

Dry solder could be gone in the AFM or the plug, or a fueling issue (faulty fuel pump or blocked filter), or alternator (is voltage dipping when it starts to stop?)

[Deziner]

Dry solder could be gone in the AFM or the plug, or a fueling issue (faulty fuel pump or blocked filter), or alternator (is voltage dipping when it starts to stop?)

I know when I had it on the dyno they said that the fuel pump is old and was struggling.

I don't think voltage is dipping.

Would any of the AFM or possible fuel pump issues make the 4WD light come on though? I guess this is making me lean towards an electrical issue.