Harley iac symptoms
WebJan 8, 2016 · Usually a bad or failing idle control valve will produce a few symptoms that can alert the driver of a potential issue. 1. Irregular idle speed One of the most common symptoms commonly associated with a problematic idle air control valve is … WebSep 14, 2024 · The ECU initiating the IAC is the first sound you hear when you key the system on. It is virtually simultaneous with the fuel pump prime. It is not very loud and may, in fact, be masked by the fuel pump noise.
Harley iac symptoms
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WebNov 5, 2009 · If I am following your troubleshooting path, you really want to check the cylinder head temp sensor. That tells the ECM to step the IAC and adjust for idle. Air intake temp helps to control pulse width on the injectors which is not going to affect your idle a whole lot. Hoople, Nov 4, 2009 #2 glider Veteran Member 25,464 108 56 WebAug 20, 2011 · components, install the IAC test lamp (part number H-D-411999-3) and follow the tests described. the in Electrical Diagnostic Manual. A throttle plate that is allowing too much air will have similar symptoms as an intake air leak. The. IAC steps will usually be low or 0 and there could be a P0505 code.
WebFeb 28, 2024 · The idle air control valve regulates the airflow in the engine combustion when the car is idling. When you stop your car and the engine is running smoothly, that’s … WebMar 26, 2024 · Below are the top 5 symptoms of a bad idle air control valve which you will easily notice. See Also: Bad Throttle Position Sensor Symptoms 1) Intermittent Idle Speed Since the idle air control valve is supposed to manage the idle speed of the engine, a bad valve will certainly throw that out of whack.
http://www.harley-performance.com/harley-fuel-injection.html WebJun 11, 2011 · No symptoms other than check engine light came on when I rode it to the dealer for a state inspection. The bike runs fine, no back fire, no stuttering, idles good. Last edited by a moderator: Jun 11, 2011 jwbro, Jun 11, 2011 #5 Hoople Account Removed 7,198 0 34 jwbro said: ↑ but I am stuck in Iraq for the next 3-4 months Welcome to the …
WebIn theory Harley’s fuel injection system is still an open-loop system by design. Article courtesy of American Iron Magazine The Harley-Davidson ESPFI system is known as a Speed/Density, Open Loop, Sequential Port Fuel Injection system, that controls both fuel flow, and spark timing. Let’s further explain these terms. the boys vossWebNov 22, 2024 · On a fuel injected Harley if you suddenly need to add throttle to start the engine, this is a common sign of a failing MAP sensor. Check Engine Light or trouble code. A check engine light will appear if the sensor fails or if certain trouble codes have been recorded based on different malfunctions. the boys vostfrWebDec 28, 2024 · After riding for 45mins or so, or until the engine is hot, the engine won't return to idle on closing the throttle. The throttle grip itself snaps closed OK but the motor continues to run at high revs. Once I get stopped, say at traffic signals, after 30-45 seconds the idle speed will reduce to normal. the boys vought employeesWebMay 4, 2024 · If it is bad then you can adjust the idle all you want and the bike will still run like crap...bad starting, low idle, popping on decel, etc...nearly all your efi issues...except for leaks can be contributed to this jewel. The ISCA engages once you turn on the ignition switch. It makes the EFI open up then slightly close based on the engine temp. the boys volume oneWebApr 13, 2015 · Internally the ECU translates the calculated IAC position values to throttle position ones. The engine start process has 4 different stages: 1.cranking 2.crank to run 3.idle open loop 4.idle closed loop The following is a description of the engine start process stages from someone more familiar with the process than I. the boys voughtWebSep 13, 2024 · I don't lose any electrical power. Only the engine starts to buck, kick, stumble, and pop. At an idle, it will either idle high at just under 1800 RPMs or stall out. It's intermittent but has been occurring more and more. I'm kind of believing I have an intake leak, but not quite sure. the boys vr fanficsWebThe idle air control (IAC) valve is carboned up and sticks or has limited control due to the carbon build up. The IAC passages are clogged or restricted with dirt, debris or carbon build up. The engine has a vacuum leak in the intake system after the throttle body that the ECM cannot control with the IAC. What are the symptoms of the P0505 code? the boys voughtland