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1996 R33 Series Ii - Idle Hunting, Spluttering & Stalling Every Gear Change

Daniel_r33skyline

By Daniel_r33skyline,
in General Maintenance

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Daniel_r33skyline Newbie

Daniel_r33skyline

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I have a 1996 series II R33 skyline (turbo) and it has spent almost 10 weeks at 2 or 3 different mechanics in town to no avail. The car will idle hunt...rev up & down irratically...wont sit on 1000rpm and pure like a kitten unless cold or you sit there and be patient and by luck get it to idle normally. The car stalls at any gear change after its warmed up. It also has nothing from 4000rpm onwards...but from idle to 4000rpm its a rocket...coil problem? AFM has been replaced and the engine is a tank...all tests have been done...compression etc and the mechanics told me that the engine and its components are perfect...the car more or less is a tank a perfect import.....i bought a new Garrett turbo 340hp....car has all other normal mods...run on stock boost. the mechanics have swapped computers with a 32....and all other components. The car was fine til the stock turbo blew which was fine...then upgraded to some monsta 600hp turbo which then was faulty....have bitten the bullet and bought a quality garret turbo run off the stocko manifold. have no ide what to do next....my options are limited.....mechanics have checked everything possible....it has to be something small which i may never find which could cost me a great car.....so has anyone had this before or know what to do next? otherwise my r33 will be used for parts.....

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      It is hard to be specific half way across the world...but it *seems* like it might have a minor issue. Is the idle stable and does it rev smoothly? I would not expect any pops out of what I am assuming is a standard ECU, standard tune, standard exhaust. You can use Nissan Data Scan to find out exactly what is happening when it runs, the cable/software is reasonably affordable if you are not planning on changing the ECU (which hopefully you are not with an NA skyline) BTW your mileage may not be that far off, these are heavy old tech cars, and being NA might mean you use a heavy foot to keep up with traffic....
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