Hi Guys,
I have a very similar problem with my 1993 Nissan Skyline R33 GTS-T.
Thank god I am not the only one experiencing these problems!
Everyone else I have tried to explain this too has looked at me like I am some sort of moron!
The problem I am having is quite difficult to explain. I'll be driving along normally with the throttle open and then all of a sudden the revs will drop and the engine will stall. It's like the throttle just cuts out. I can have my foot flat to the floor and the revs just drop and the engine cuts out. Could this be due to the fuel pump issues mentioned previously?
But, if I then turn the ignition off and restart the car, it will continue on driving normally until of course, it happens again!
I can also sometimes bring the revs back up by depressing the clutch and engaging gears again.
This previously happened every trip I made in the car without fail-very dangerous!!!
I have reset the ECU several times, and the car generally will then go for weeks without it happening, but, will all of a sudden start to occur again.
It generally happens after I go over a large bump, or when I change gears. It has also ocurred several times when I have activated my windscreen washers. It also tends to happen more often in hot weather.
It also has a tendency to happen when the car is at idle or when engaging the clutch when pulling up at lights.
It has also happened regularly when when I slam the door shut whilst the turbo-timer is running.
I have had the car dyno-tuned twice and the plugs replaced in an attempt to solve the problem. I think I may also be having problems with a leaky BOV. Could this be contributing to the problem in any way?
I have asked several auto-electricians to look at it, most have refused because they know nothing about them, and one told me that there is no such thing as re-setting the ECU and that it is a waste of time!
I have even taken it to Nissan who basically told me all self importers are scum and to go jump!
From my very limited knowledge of cars, I feel it is probably an electrical fault, fuel problem, or, diagnostics issue, but, I really don't know. This problem is very frustrating and also very embarrassing when it happens in the middle of an intersection-not to mention dangerous.
It has been suggested to me that it could either be an airflow problem, a problem with the crank angle sensor, or, a problem with the ignition regulator/modulator, but, the mechanic I have been taking the car to has so far been unable to fix the problem.
Obviously I am not too happy with this and was hoping someone could recommend a reputable mechanic/workshop/auto electrician in Melbourne that specialises in or at least has a great deal of experience with R33 Skylines.
Any further advice you could offer me on this issue would be greatly appreciated.