Hey all,
Just posting this up to see if other may have experienced and recified the same issue with there r33 gtst's.
Car idles nicely at the correct rpm (650rpm from memory). about every 30-45 secods or so its like the motor has a small miss , i feel the engine lightly jolt and revs must drop (happens so quick u dont notice it on the tacho).. This has been happening for some time now, but its getting annoying so i want to try and fix it.
I have new plugs bcpr6es, fuel pump has been replace with a new item, AFM has been cleaned with electrical cleaner.
I have not cleaned aac valve (idle control valve) or replaced the fuel filter.
Any idea what might be causing this.. Coils are good and hold up good under boost and whilst driving the car the problem is not there.. only at idle.
mods include fmic, zorst, std ecu.