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There sure are alot of things that can cause a bad idle. The first thing I would try is cleaning the throttle body and reseting the ECU. There are two valves (fast idle valve and EACV) that can cause problems when malfunctioning.Section 11-84 in the service manual shows how to set the idle speed. http://www.nsxprime.com/FAQ/Reference/1991_svcman/1991_svcman.htmGood luck
There sure are alot of things that can cause a bad idle. The first thing I would try is cleaning the throttle body and reseting the ECU. There are two valves (fast idle valve and EACV) that can cause problems when malfunctioning.
Section 11-84 in the service manual shows how to set the idle speed. http://www.nsxprime.com/FAQ/Reference/1991_svcman/1991_svcman.htm
Good luck
