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No power to the Idle Air Control Valve 1981 BMW 633

No power to the Idle Air Control Valve

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My 2009 BMW 320i idle a bit higher. What cause that


The automatic idle control valve senses engine temperature and allows an extra amount of air to bypass the throttle plate. The valve may need cleaning or the sensors may becoming faulty.

Dec 18, 2016 | 2009 BMW 320i

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Keeps throwing up trouble codes p1506,p1151,p0302,p0171


Definition of Diagnostic Trouble Code P1506 Audi: Closed Throttle Position Switch Does Not Open/Short to Ground BMW: Idle-Speed Control Valve Opening Solenoid Control Circuit Signal High Ford: Idle Air Control Overspeed Error (see P0507) Jaguar: Idle Air Control System RPM Lower Than Expected - B Bank Kia: IAC Valve Opening Coil Voltage High Lincoln: Idle Air Control Overspeed Error (see P0507) Mazda: Idle Air Control Overspeed Error Mercury: Idle Air Control Overspeed Error (see P0507) Porsche: Throttle Jacking Unit Lower Mechanical Stop, Signal Implausible Volkswagen: Closed Throttle Position Switch Does Not Open/Short to Ground Volvo: IAC Valve Opening Signal
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Definition of Diagnostic Trouble Code P1151 Audi: Bank1, Long Term Fuel Trim, Range 1 Leanness Lower Limit Exceeded BMW: Oxygen Sensor Heater Circuit Signal Intermittent (Bank 2 Sensor 1) Ford: Lack Of Heated Oxygen Sensor Bank 2 Sensor 1 Switches - Sensor Indicates Lean Jaguar: Lack of H02S-21 switch, sensor indicates lean Land Rover: Lambda control limit bank 2.Implausible signal/condition Lincoln: Lack Of Heated Oxygen Sensor Bank 2 Sensor 1 Switches - Sensor Indicates Lean Mazda: Lack Of Heated Oxygen Sensor Bank 2 Sensor 1 Switches - Sensor Indicates Lean Mercury: Lack Of Heated Oxygen Sensor Bank 2 Sensor 1 Switches - Sensor Indicates Lean Subaru: HO2S-12 Heater Circuit High Input Toyota: Coolant Path Clog Up for Coolant Heat Storage System Volkswagen: Bank1, Long Term Fuel Trim, Range 1 Leanness Lower Limit Exceeded
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Definition of Diagnostic Trouble Code P0302 Category: Powertrain Definition: Cylinder 2 Misfire DetectedNote: This definition of P0302 is applied to all manufacturers
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Definition of Diagnostic Trouble Code P0171 Category: Powertrain Definition: System Too Lean Bank 1Note: This definition of P0171 is applied to all manufacturers

Jun 17, 2015 | Cars & Trucks

2 Answers

Why is my1997 bmw Z3 1.9 start rough for 2min then is ok


The EGR valve opens when the engine is warming up, which allows exhaust to enter the intake manifold. This is essentially "extra air" coming into the engine. The engine has an "idle speed control" function, which is either a solenoid or small stepper motor connected to a valve that allows a controlled amount of air to "sneak" by the throttle plate in the throttle body. Fundamentally, it is the amount of air entering a fuel injected engine that controls engine RPM. A defective idle speed control ("ISC) motor or solenoid can cause the problem you stated. (I do not know which type is used in your BMW.) Often, a check engine light will illuminate of the engine computer cannot adequately regualte engine idle speed.

Aug 27, 2014 | 1997 BMW Z3 Roadster

1 Answer

03 bmw x5 rough idle and stall out


Clean or replace the idle speed control valve.

Apr 08, 2013 | 2005 BMW X5

1 Answer

Hello I own a 1998 323i se bmw. Air intake hose that leads to throttle body was cracked but replaced hoping to fix fact that car stalls after idling for about 45 sec. this has not fixed the problem but...


Your problem is still consistent with an air leak. If the mass airflow valve or the idle air control valve had failed, it should set an error code in the computer.
I would look again at all the air tubing, including the elbow over the throttle valve and the tubing to the idle air control. While you are at it, get some mass airflow valve cleaner and clean the MAF, the throttle valve, and the idle air control valve.

Mar 09, 2011 | 1999 BMW 323 Series

1 Answer

My car is idling too fast, where is the idle cable,so i can alter its idle speed , i have a 1995 bmw 316i se


it's not old carbureted chevy, it's not idling high because there's too much tension on the gas pedal cable.

look at replacing/cleaning: idle control valve, maf(mass air flow sensor) vacuum leaks: intake manifold or air intake system.

Jul 03, 2010 | 1996 BMW 318

2 Answers

633 csi start shuts of won't idle or rev.


unplug the mass air flow sensor and try to start the car. if it idles, replace it. this can also be done by tps adjustment on the side of the throttle body but can be tricky. let me know

Jan 24, 2010 | 1983 BMW 7 Series

2 Answers

Where is the timing belt on a 2001 BMW 325i??? Also, where is the ICV (Idle Control Valve) on a 2001 BMW 325i?


iac valve ( idle air control valve) its located on the throttle body, and timing belt, that year does not have a timing belt, good luck.

Nov 06, 2009 | 2001 BMW 325

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