Subject	The Fast Idle Control Valve on the IAAC is responsible
Posted by	ZTicket(Dallas) on June 02, 2016 at 8:33 AM
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In Reply To	91 300zx won't stay running posted by Irishguy73 on May 31, 2016 at 02:10 AM
Message	for keeping the idle up when you lift the throttle after crusing AND for increasing the idle when you turn on the Air Conditioning. I had the same problem as you're having. I replaced the IAAC which included the FICV. Still had the problem. Very frustrating. In chasing the problem down, it turns out that when I replaced my engine harness, I over-did the dialectric grease in all the connectors. The IAAC & FICV gets power from a connector at the fuse box on the drivers side. I removed all the "grease" from that connector and months of frustration went away. Everything works as it is supposed to. Turn your A/C on and I'll bet your idle goes down, not up. Check connections before you buy new IAAC.
Follow Ups	91 300zx won't stay running - Irishguy73 02:10:24 05/31/16 Sounds like it could be either... - -Grimm- 12:17:28 05/31/16 The Fast Idle Control Valve on the IAAC is responsible - ZTicket(Dallas) 08:33:50 06/02/16
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