this happened to mine ,just after coming off the rollers ,spin up the road then left up ,tryed all the mentioned above and in the end it was the ecu not getting full voltage,pulled a wire from the ignition to the ecu power supply and away she went ,
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3 fprs, 2 fuel pumps, a full day of pricking about and an afm later and it turned out to be the afm and not the fpr that we originally thought! Anybody got a rb20 afm?