U. valve by an ON/OFF pulse. Dec 1, 2025 · 1984-1989 Nissan 300ZX Z31 OEM IACV Idle Air Regulator Control Valve 22660-V5210 If you need any OEM Nissan 300ZX Idle Control Valve, feel free to choose them out of our huge selection of genuine Nissan 300ZX Idle Control Valve. Feb 3, 2016 · 84 300zx z31 5 speed turbo Got it with EGR and FICD/AAC assembly removed, also a breather filter on the port on the valve cover on the driver side front of the engine, several vacuum ports blocked off Basically, what is the PROPER way to delete the EGR and FICD/AAC? May 18, 2007 · The AAC valve (upper larger round one) is controlled by the ECU and continually modulates the valve to control base idle. Common Problems: Troubleshooting: To test do the following: Sources used on this page: 1984-1988 Nissan 300ZX Factory Service Manual Jan 13, 2010 · Next turn engine off and remove keyDisconnect the AAC connector from the IACV (Idle Air Control Valve)seen here (yellow) Start the engine and use the IACV adjustment screw to lower idle to 650rpm Apr 28, 2023 · 300ZX (Z31) Performance / Technical - AAC Power Draw - Hey guys, it seems I have a power draw that drains by battery over a couple days. The ECU actuates the AAC valve by an ON/OFF pulse. Also, there is no ticking when cold started in the morning and the idle is high. I hear a fairly prominent ticking coming from what I believe is the auxiliary air control valve. The (A. )Auxiliary Air Control Valve is attached to the right side of the intake Manifold. The IAA controls the idle speed of the engine based on the signal it receives from the car's central computer, the Electronic Control Unit (ECU). I?ve checked all the circuits, and I?ve found the issue to be the AAC valve (auxiliary air control, as Nissan calls it). The E. The parasitic draw measures about 0. Feb 19, 2018 · Im working on using the entire 88T harness stand alone so I can test a Z31 motor out of the car before I pull my bad motor and then use it on 240z on my turbo block. All our parts are offered at unbeatable prices and are supported by the manufacturer's warranty. Were you able to test the to see if the valve would open at all even not connected to manifold or are the part numbers the same for the aac valve? Dec 1, 2009 · Edit: I put a screwdriver up to the AAC valve and it is where the ticking sounds most prominent. so I am thinking its the AAC valve. The AAC (Auxiliary Air Control) Valve is attached to the right side of the intake manifold. When I unplug it, The IAA is made up of the Auxiallary Air Control (AAC) valve, the FICD (Fast Idle Control Device) solenoid, and the idle adjust screw. The longer that ON duty is left on, the larger the amount of air that will flow through the A. May 31, 2004 · My 88 Turbo runs rough and sometimes dies when at cold idle. May 18, 2007 · The AAC valve (upper larger round one) is controlled by the ECU and continually modulates the valve to control base idle. I Dec 1, 2009 · Here's a quick teaser I have a quick question. Usually when it goes bad you get erratic idle, stumble, crappy fuel mileage, and unstable operating conditions. Once you take off and it warms up all is fine. actuates the A. My question is: Is there a specific or detailed cleaning procedure once you remove it? Like disassembly etc. ? or do you just squirt some type of cleaner in it and let it drain out and dry? I have searched here and on Z31. The longer the ON duty is left on, the larger the amount of air that will flow through the AAC valve. com for info and found none. It comes and goes but is pretty constant. 7 amps. . valve. C. Has anyone else experienced this before? Thanks in advance! Edit: I put a screwdriver up to the AAC valve and it is where the ticking sounds most prominent. A.

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